[PATCH v1 1/3] platform/x86: thinkpad_acpi: Make logic straight in hotkey_exit()

[PATCH v1 1/3] platform/x86: thinkpad_acpi: Make logic straight in hotkey_exit()

[Andy Shevchenko]

The commit 4be73005e4dc

	("thinkpad-acpi: remove uneeded tp_features.hotkey tests in hotkey_exit")

adds a complex logic behind hotkey status check in a way
it started mixing logical operations with bitwise ones.

Refactor the code to make it straight and slightly clearer.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 7b6cb0c69b02..7740b5e1b998 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -3090,6 +3090,8 @@ static void tpacpi_send_radiosw_update(void)
 
 static void hotkey_exit(void)
 {
+	int res;
+
 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
 	mutex_lock(&hotkey_mutex);
 	hotkey_poll_stop_sync();
@@ -3101,11 +3103,8 @@ static void hotkey_exit(void)
 
 	dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
 		   "restoring original HKEY status and mask\n");
-	/* yes, there is a bitwise or below, we want the
-	 * functions to be called even if one of them fail */
-	if (((tp_features.hotkey_mask &&
-	      hotkey_mask_set(hotkey_orig_mask)) |
-	     hotkey_status_set(false)) != 0)
+	res = tp_features.hotkey_mask ? hotkey_mask_set(hotkey_orig_mask) : 0;
+	if (hotkey_status_set(false) || res)
 		pr_err("failed to restore hot key mask "
 		       "to BIOS defaults\n");
 }
-- 
2.11.0

[PATCH v1 2/3] platform/x86: thinkpad_acpi: Join string literals back

[Andy Shevchenko]

There is no point to keep string literal split. It even makes slightly
harder to maintain and debug.

Join string literals back to be oneliners.

While here, print negative error without changing a sign as it is a
common pattern in the kernel.

Other than above there were no functional changes intended.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 182 +++++++++++++----------------------
 1 file changed, 65 insertions(+), 117 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 7740b5e1b998..e6fbb2579dd9 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -590,8 +590,8 @@ static int acpi_evalf(acpi_handle handle,
 			break;
 			/* add more types as needed */
 		default:
-			pr_err("acpi_evalf() called "
-			       "with invalid format character '%c'\n", c);
+			pr_err("acpi_evalf() called with invalid format character '%c'\n",
+			       c);
 			va_end(ap);
 			return 0;
 		}
@@ -619,8 +619,8 @@ static int acpi_evalf(acpi_handle handle,
 		break;
 		/* add more types as needed */
 	default:
-		pr_err("acpi_evalf() called "
-		       "with invalid format character '%c'\n", res_type);
+		pr_err("acpi_evalf() called with invalid format character '%c'\n",
+		       res_type);
 		return 0;
 	}
 
@@ -790,8 +790,8 @@ static int __init setup_acpi_notify(struct ibm_struct *ibm)
 			ibm->acpi->type, dispatch_acpi_notify, ibm);
 	if (ACPI_FAILURE(status)) {
 		if (status == AE_ALREADY_EXISTS) {
-			pr_notice("another device driver is already "
-				  "handling %s events\n", ibm->name);
+			pr_notice("another device driver is already handling %s events\n",
+				  ibm->name);
 		} else {
 			pr_err("acpi_install_notify_handler(%s) failed: %s\n",
 			       ibm->name, acpi_format_exception(status));
@@ -1095,8 +1095,7 @@ static void printk_deprecated_attribute(const char * const what,
 					const char * const details)
 {
 	tpacpi_log_usertask("deprecated sysfs attribute");
-	pr_warn("WARNING: sysfs attribute %s is deprecated and "
-		"will be removed. %s\n",
+	pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n",
 		what, details);
 }
 
@@ -1828,8 +1827,7 @@ static void __init tpacpi_check_outdated_fw(void)
 		 * best if the user upgrades the firmware anyway.
 		 */
 		pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
-		pr_warn("WARNING: This firmware may be missing critical bug "
-			"fixes and/or important features\n");
+		pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n");
 	}
 }
 
@@ -2198,8 +2196,7 @@ static int hotkey_mask_set(u32 mask)
 	 * a given event.
 	 */
 	if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
-		pr_notice("asked for hotkey mask 0x%08x, but "
-			  "firmware forced it to 0x%08x\n",
+		pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n",
 			  fwmask, hotkey_acpi_mask);
 	}
 
@@ -2224,11 +2221,9 @@ static int hotkey_user_mask_set(const u32 mask)
 	    (mask == 0xffff || mask == 0xffffff ||
 	     mask == 0xffffffff)) {
 		tp_warned.hotkey_mask_ff = 1;
-		pr_notice("setting the hotkey mask to 0x%08x is likely "
-			  "not the best way to go about it\n", mask);
-		pr_notice("please consider using the driver defaults, "
-			  "and refer to up-to-date thinkpad-acpi "
-			  "documentation\n");
+		pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n",
+			  mask);
+		pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n");
 	}
 
 	/* Try to enable what the user asked for, plus whatever we need.
@@ -2603,17 +2598,14 @@ static void hotkey_poll_setup(const bool may_warn)
 					NULL, TPACPI_NVRAM_KTHREAD_NAME);
 			if (IS_ERR(tpacpi_hotkey_task)) {
 				tpacpi_hotkey_task = NULL;
-				pr_err("could not create kernel thread "
-				       "for hotkey polling\n");
+				pr_err("could not create kernel thread for hotkey polling\n");
 			}
 		}
 	} else {
 		hotkey_poll_stop_sync();
 		if (may_warn && (poll_driver_mask || poll_user_mask) &&
 		    hotkey_poll_freq == 0) {
-			pr_notice("hot keys 0x%08x and/or events 0x%08x "
-				  "require polling, which is currently "
-				  "disabled\n",
+			pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n",
 				  poll_user_mask, poll_driver_mask);
 		}
 	}
@@ -2840,12 +2832,10 @@ static ssize_t hotkey_source_mask_store(struct device *dev,
 	mutex_unlock(&hotkey_mutex);
 
 	if (rc < 0)
-		pr_err("hotkey_source_mask: "
-		       "failed to update the firmware event mask!\n");
+		pr_err("hotkey_source_mask: failed to update the firmware event mask!\n");
 
 	if (r_ev)
-		pr_notice("hotkey_source_mask: "
-			  "some important events were disabled: 0x%04x\n",
+		pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n",
 			  r_ev);
 
 	tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
@@ -3105,8 +3095,7 @@ static void hotkey_exit(void)
 		   "restoring original HKEY status and mask\n");
 	res = tp_features.hotkey_mask ? hotkey_mask_set(hotkey_orig_mask) : 0;
 	if (hotkey_status_set(false) || res)
-		pr_err("failed to restore hot key mask "
-		       "to BIOS defaults\n");
+		pr_err("failed to restore hot key mask to BIOS defaults\n");
 }
 
 static void __init hotkey_unmap(const unsigned int scancode)
@@ -3618,11 +3607,8 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
 	 * userspace. tpacpi_detect_brightness_capabilities() must have
 	 * been called before this point  */
 	if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
-		pr_info("This ThinkPad has standard ACPI backlight "
-			"brightness control, supported by the ACPI "
-			"video driver\n");
-		pr_notice("Disabling thinkpad-acpi brightness events "
-			  "by default...\n");
+		pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n");
+		pr_notice("Disabling thinkpad-acpi brightness events by default...\n");
 
 		/* Disable brightness up/down on Lenovo thinkpads when
 		 * ACPI is handling them, otherwise it is plain impossible
@@ -3791,7 +3777,7 @@ static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)
 		    TP_ACPI_HOTKEYSCAN_EXTENDED_START -
 		    TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) {
 			pr_info("Unhandled adaptive keyboard key: 0x%x\n",
-					scancode);
+				scancode);
 			return false;
 		}
 		keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY +
@@ -3988,14 +3974,12 @@ static bool hotkey_notify_6xxx(const u32 hkey,
 		/* recommended action: immediate sleep/hibernate */
 		break;
 	case TP_HKEY_EV_ALARM_SENSOR_HOT:
-		pr_crit("THERMAL ALARM: "
-			"a sensor reports something is too hot!\n");
+		pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n");
 		/* recommended action: warn user through gui, that */
 		/* some internal component is too hot */
 		break;
 	case TP_HKEY_EV_ALARM_SENSOR_XHOT:
-		pr_alert("THERMAL EMERGENCY: "
-			 "a sensor reports something is extremely hot!\n");
+		pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n");
 		/* recommended action: immediate sleep/hibernate */
 		break;
 	case TP_HKEY_EV_AC_CHANGED:
@@ -4120,8 +4104,8 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
 		}
 		if (!known_ev) {
 			pr_notice("unhandled HKEY event 0x%04x\n", hkey);
-			pr_notice("please report the conditions when this "
-				  "event happened to %s\n", TPACPI_MAIL);
+			pr_notice("please report the conditions when this event happened to %s\n",
+				  TPACPI_MAIL);
 		}
 
 		/* netlink events */
@@ -4155,8 +4139,7 @@ static void hotkey_resume(void)
 
 	if (hotkey_status_set(true) < 0 ||
 	    hotkey_mask_set(hotkey_acpi_mask) < 0)
-		pr_err("error while attempting to reset the event "
-		       "firmware interface\n");
+		pr_err("error while attempting to reset the event firmware interface\n");
 
 	tpacpi_send_radiosw_update();
 	hotkey_tablet_mode_notify_change();
@@ -4208,12 +4191,8 @@ static void hotkey_enabledisable_warn(bool enable)
 {
 	tpacpi_log_usertask("procfs hotkey enable/disable");
 	if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
-		  pr_fmt("hotkey enable/disable functionality has been "
-			 "removed from the driver.  "
-			 "Hotkeys are always enabled.\n")))
-		pr_err("Please remove the hotkey=enable module "
-		       "parameter, it is deprecated.  "
-		       "Hotkeys are always enabled.\n");
+		  pr_fmt("hotkey enable/disable functionality has been removed from the driver.  Hotkeys are always enabled.\n")))
+		pr_err("Please remove the hotkey=enable module parameter, it is deprecated.  Hotkeys are always enabled.\n");
 }
 
 static int hotkey_write(char *buf)
@@ -4871,8 +4850,7 @@ static void video_exit(void)
 	dbg_printk(TPACPI_DBG_EXIT,
 		   "restoring original video autoswitch mode\n");
 	if (video_autosw_set(video_orig_autosw))
-		pr_err("error while trying to restore original "
-			"video autoswitch mode\n");
+		pr_err("error while trying to restore original video autoswitch mode\n");
 }
 
 static int video_outputsw_get(void)
@@ -5962,8 +5940,7 @@ static int __init led_init(struct ibm_init_struct *iibm)
 	}
 
 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
-	pr_notice("warning: userspace override of important "
-		  "firmware LEDs is enabled\n");
+	pr_notice("warning: userspace override of important firmware LEDs is enabled\n");
 #endif
 	return 0;
 }
@@ -5992,8 +5969,7 @@ static int led_read(struct seq_file *m)
 		}
 	}
 
-	seq_printf(m, "commands:\t"
-		       "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
+	seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n");
 
 	return 0;
 }
@@ -6366,13 +6342,10 @@ static int __init thermal_init(struct ibm_init_struct *iibm)
 		if (ta1 == 0) {
 			/* This is sheer paranoia, but we handle it anyway */
 			if (acpi_tmp7) {
-				pr_err("ThinkPad ACPI EC access misbehaving, "
-				       "falling back to ACPI TMPx access "
-				       "mode\n");
+				pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n");
 				thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
 			} else {
-				pr_err("ThinkPad ACPI EC access misbehaving, "
-				       "disabling thermal sensors access\n");
+				pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n");
 				thermal_read_mode = TPACPI_THERMAL_NONE;
 			}
 		} else {
@@ -6851,26 +6824,20 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
 
 	if (!brightness_enable) {
 		dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
-			   "brightness support disabled by "
-			   "module parameter\n");
+			   "brightness support disabled by module parameter\n");
 		return 1;
 	}
 
 	if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
 		if (brightness_enable > 1) {
-			pr_info("Standard ACPI backlight interface "
-				"available, not loading native one\n");
+			pr_info("Standard ACPI backlight interface available, not loading native one\n");
 			return 1;
 		} else if (brightness_enable == 1) {
-			pr_warn("Cannot enable backlight brightness support, "
-				"ACPI is already handling it.  Refer to the "
-				"acpi_backlight kernel parameter.\n");
+			pr_warn("Cannot enable backlight brightness support, ACPI is already handling it.  Refer to the acpi_backlight kernel parameter.\n");
 			return 1;
 		}
 	} else if (tp_features.bright_acpimode && brightness_enable > 1) {
-		pr_notice("Standard ACPI backlight interface not "
-			  "available, thinkpad_acpi native "
-			  "brightness control enabled\n");
+		pr_notice("Standard ACPI backlight interface not available, thinkpad_acpi native brightness control enabled\n");
 	}
 
 	/*
@@ -6921,10 +6888,10 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
 			"brightness is supported\n");
 
 	if (quirks & TPACPI_BRGHT_Q_ASK) {
-		pr_notice("brightness: will use unverified default: "
-			  "brightness_mode=%d\n", brightness_mode);
-		pr_notice("brightness: please report to %s whether it works well "
-			  "or not on your ThinkPad\n", TPACPI_MAIL);
+		pr_notice("brightness: will use unverified default: brightness_mode=%d\n",
+			  brightness_mode);
+		pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n",
+			  TPACPI_MAIL);
 	}
 
 	/* Added by mistake in early 2007.  Probably useless, but it could
@@ -6934,8 +6901,7 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
 	backlight_update_status(ibm_backlight_device);
 
 	vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
-			"brightness: registering brightness hotkeys "
-			"as change notification\n");
+		    "brightness: registering brightness hotkeys as change notification\n");
 	tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
 				| TP_ACPI_HKEY_BRGHTUP_MASK
 				| TP_ACPI_HKEY_BRGHTDWN_MASK);
@@ -7598,8 +7564,8 @@ static int __init volume_init(struct ibm_init_struct *iibm)
 		return -EINVAL;
 
 	if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
-		pr_err("UCMS step volume mode not implemented, "
-		       "please contact %s\n", TPACPI_MAIL);
+		pr_err("UCMS step volume mode not implemented, please contact %s\n",
+		       TPACPI_MAIL);
 		return 1;
 	}
 
@@ -7612,8 +7578,7 @@ static int __init volume_init(struct ibm_init_struct *iibm)
 	 */
 	if (!alsa_enable) {
 		vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
-			    "ALSA mixer disabled by parameter, "
-			    "not loading volume subdriver...\n");
+			    "ALSA mixer disabled by parameter, not loading volume subdriver...\n");
 		return 1;
 	}
 
@@ -7705,12 +7670,9 @@ static int volume_read(struct seq_file *m)
 		if (volume_control_allowed) {
 			seq_printf(m, "commands:\tunmute, mute\n");
 			if (!tp_features.mixer_no_level_control) {
-				seq_printf(m,
-					       "commands:\tup, down\n");
-				seq_printf(m,
-					       "commands:\tlevel <level>"
-					       " (<level> is 0-%d)\n",
-					       TP_EC_VOLUME_MAX);
+				seq_printf(m, "commands:\tup, down\n");
+				seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
+					      TP_EC_VOLUME_MAX);
 			}
 		}
 	}
@@ -7733,10 +7695,8 @@ static int volume_write(char *buf)
 	if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
 		if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
 			tp_warned.volume_ctrl_forbidden = 1;
-			pr_notice("Console audio control in monitor mode, "
-				  "changes are not allowed\n");
-			pr_notice("Use the volume_control=1 module parameter "
-				  "to enable volume control\n");
+			pr_notice("Console audio control in monitor mode, changes are not allowed\n");
+			pr_notice("Use the volume_control=1 module parameter to enable volume control\n");
 		}
 		return -EPERM;
 	}
@@ -8018,8 +7978,7 @@ TPACPI_HANDLE(sfan, ec, "SFAN",	/* 570 */
 static void fan_quirk1_setup(void)
 {
 	if (fan_control_initial_status == 0x07) {
-		pr_notice("fan_init: initial fan status is unknown, "
-			  "assuming it is in auto mode\n");
+		pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n");
 		tp_features.fan_ctrl_status_undef = 1;
 	}
 }
@@ -8416,8 +8375,8 @@ static void fan_watchdog_fire(struct work_struct *ignored)
 	pr_notice("fan watchdog: enabling fan\n");
 	rc = fan_set_enable();
 	if (rc < 0) {
-		pr_err("fan watchdog: error %d while enabling fan, "
-		       "will try again later...\n", -rc);
+		pr_err("fan watchdog: error %d while enabling fan, will try again later...\n",
+		       rc);
 		/* reschedule for later */
 		fan_watchdog_reset();
 	}
@@ -8714,8 +8673,7 @@ static int __init fan_init(struct ibm_init_struct *iibm)
 					"secondary fan support enabled\n");
 			}
 		} else {
-			pr_err("ThinkPad ACPI EC access misbehaving, "
-			       "fan status and control unavailable\n");
+			pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n");
 			return 1;
 		}
 	}
@@ -8814,8 +8772,8 @@ static void fan_suspend(void)
 	fan_control_resume_level = 0;
 	rc = fan_get_status_safe(&fan_control_resume_level);
 	if (rc < 0)
-		pr_notice("failed to read fan level for later "
-			  "restore during resume: %d\n", rc);
+		pr_notice("failed to read fan level for later restore during resume: %d\n",
+			  rc);
 
 	/* if it is undefined, don't attempt to restore it.
 	 * KEEP THIS LAST */
@@ -8934,20 +8892,17 @@ static int fan_read(struct seq_file *m)
 			break;
 
 		default:
-			seq_printf(m, " (<level> is 0-7, "
-				       "auto, disengaged, full-speed)\n");
+			seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n");
 			break;
 		}
 	}
 
 	if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
 		seq_printf(m, "commands:\tenable, disable\n"
-			       "commands:\twatchdog <timeout> (<timeout> "
-			       "is 0 (off), 1-120 (seconds))\n");
+			       "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n");
 
 	if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
-		seq_printf(m, "commands:\tspeed <speed>"
-			       " (<speed> is 0-65535)\n");
+		seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n");
 
 	return 0;
 }
@@ -9473,8 +9428,7 @@ static int __must_check __init get_thinkpad_model_data(
 				tp->ec_release = (ec_fw_string[4] << 8)
 						| ec_fw_string[5];
 			} else {
-				pr_notice("ThinkPad firmware release %s "
-					  "doesn't match the known patterns\n",
+				pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n",
 					  ec_fw_string);
 				pr_notice("please report this to %s\n",
 					  TPACPI_MAIL);
@@ -9669,8 +9623,7 @@ MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
 
 module_param(force_load, bool, 0444);
 MODULE_PARM_DESC(force_load,
-		 "Attempts to load the driver even on a "
-		 "mis-identified ThinkPad when true");
+		 "Attempts to load the driver even on a mis-identified ThinkPad when true");
 
 module_param_named(fan_control, fan_control_allowed, bool, 0444);
 MODULE_PARM_DESC(fan_control,
@@ -9678,8 +9631,7 @@ MODULE_PARM_DESC(fan_control,
 
 module_param_named(brightness_mode, brightness_mode, uint, 0444);
 MODULE_PARM_DESC(brightness_mode,
-		 "Selects brightness control strategy: "
-		 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
+		 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
 
 module_param(brightness_enable, uint, 0444);
 MODULE_PARM_DESC(brightness_enable,
@@ -9688,18 +9640,15 @@ MODULE_PARM_DESC(brightness_enable,
 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
 module_param_named(volume_mode, volume_mode, uint, 0444);
 MODULE_PARM_DESC(volume_mode,
-		 "Selects volume control strategy: "
-		 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
+		 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
 
 module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
 MODULE_PARM_DESC(volume_capabilities,
-		 "Selects the mixer capabilites: "
-		 "0=auto, 1=volume and mute, 2=mute only");
+		 "Selects the mixer capabilites: 0=auto, 1=volume and mute, 2=mute only");
 
 module_param_named(volume_control, volume_control_allowed, bool, 0444);
 MODULE_PARM_DESC(volume_control,
-		 "Enables software override for the console audio "
-		 "control when true");
+		 "Enables software override for the console audio control when true");
 
 module_param_named(software_mute, software_mute_requested, bool, 0444);
 MODULE_PARM_DESC(software_mute,
@@ -9716,8 +9665,7 @@ MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
 
 #define TPACPI_PARAM(feature) \
 	module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
-	MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
-			 "at module load, see documentation")
+	MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation")
 
 TPACPI_PARAM(hotkey);
 TPACPI_PARAM(bluetooth);
-- 
2.11.0

[PATCH v1 3/3] platform/x86: thinkpad_acpi: Add a comment about 0 in module_param_call()

[Andy Shevchenko]

As per discussion [1] there are only few users of module_param_call() in
kernel which prevent to read module parameters back.

It thinkpad_acpi driver there is even no method do so. Thus, for now,
add just a comment to explain why 0 is used as permissions in
module_param_call().

[1]: https://patchwork.ozlabs.org/patch/713245/

Cc: Richard Weinberger <richard.weinberger@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index e6fbb2579dd9..f5bc888b2ef4 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -9663,6 +9663,7 @@ module_param_named(enable, alsa_enable, bool, 0444);
 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
 
+/* The module parameter can't be read back, that's why 0 is used here */
 #define TPACPI_PARAM(feature) \
 	module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
 	MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation")
-- 
2.11.0

Re: [PATCH v1 1/3] platform/x86: thinkpad_acpi: Make logic straight in hotkey_exit()

[Henrique de Moraes Holschuh]

On Tue, 09 May 2017, Andy Shevchenko wrote:
> The commit 4be73005e4dc
> 
> 	("thinkpad-acpi: remove uneeded tp_features.hotkey tests in hotkey_exit")
> 
> adds a complex logic behind hotkey status check in a way
> it started mixing logical operations with bitwise ones.
> 
> Refactor the code to make it straight and slightly clearer.

Eh, I find this actually less clear, given the comment that was in the
old code, which you deleted.

Please keep the important part of the comment at the very least.

> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
>  drivers/platform/x86/thinkpad_acpi.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
> index 7b6cb0c69b02..7740b5e1b998 100644
> --- a/drivers/platform/x86/thinkpad_acpi.c
> +++ b/drivers/platform/x86/thinkpad_acpi.c
> @@ -3090,6 +3090,8 @@ static void tpacpi_send_radiosw_update(void)
>  
>  static void hotkey_exit(void)
>  {
> +	int res;
> +
>  #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
>  	mutex_lock(&hotkey_mutex);
>  	hotkey_poll_stop_sync();
> @@ -3101,11 +3103,8 @@ static void hotkey_exit(void)
>  
>  	dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
>  		   "restoring original HKEY status and mask\n");
> -	/* yes, there is a bitwise or below, we want the
> -	 * functions to be called even if one of them fail */
> -	if (((tp_features.hotkey_mask &&
> -	      hotkey_mask_set(hotkey_orig_mask)) |
> -	     hotkey_status_set(false)) != 0)
> +	res = tp_features.hotkey_mask ? hotkey_mask_set(hotkey_orig_mask) : 0;
> +	if (hotkey_status_set(false) || res)
>  		pr_err("failed to restore hot key mask "
>  		       "to BIOS defaults\n");
>  }

-- 
  Henrique Holschuh

Re: [PATCH v1 3/3] platform/x86: thinkpad_acpi: Add a comment about 0 in module_param_call()

[Henrique de Moraes Holschuh]

On Tue, 09 May 2017, Andy Shevchenko wrote:
> As per discussion [1] there are only few users of module_param_call() in
> kernel which prevent to read module parameters back.
> 
> It thinkpad_acpi driver there is even no method do so. Thus, for now,
> add just a comment to explain why 0 is used as permissions in
> module_param_call().
> 
> [1]: https://patchwork.ozlabs.org/patch/713245/
> 
> Cc: Richard Weinberger <richard.weinberger@gmail.com>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>

> ---
>  drivers/platform/x86/thinkpad_acpi.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
> index e6fbb2579dd9..f5bc888b2ef4 100644
> --- a/drivers/platform/x86/thinkpad_acpi.c
> +++ b/drivers/platform/x86/thinkpad_acpi.c
> @@ -9663,6 +9663,7 @@ module_param_named(enable, alsa_enable, bool, 0444);
>  MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
>  #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
>  
> +/* The module parameter can't be read back, that's why 0 is used here */
>  #define TPACPI_PARAM(feature) \
>  	module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
>  	MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation")

-- 
  Henrique Holschuh

  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot

Re: [PATCH v1 2/3] platform/x86: thinkpad_acpi: Join string literals back

[Henrique de Moraes Holschuh]

On Tue, 09 May 2017, Andy Shevchenko wrote:
> There is no point to keep string literal split. It even makes slightly
> harder to maintain and debug.

Ooold code, from a time when random people would annoy others over
80-column instead of doing useful reviews...

> Join string literals back to be oneliners.

Thanks.  I agree.

> While here, print negative error without changing a sign as it is a
> common pattern in the kernel.

A separate patch for this would be better: it would be easier to
actually check that no functional changes crept in by mistake.

> Other than above there were no functional changes intended.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>

> ---
>  drivers/platform/x86/thinkpad_acpi.c | 182 +++++++++++++----------------------
>  1 file changed, 65 insertions(+), 117 deletions(-)
> 
> diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
> index 7740b5e1b998..e6fbb2579dd9 100644
> --- a/drivers/platform/x86/thinkpad_acpi.c
> +++ b/drivers/platform/x86/thinkpad_acpi.c
> @@ -590,8 +590,8 @@ static int acpi_evalf(acpi_handle handle,
>  			break;
>  			/* add more types as needed */
>  		default:
> -			pr_err("acpi_evalf() called "
> -			       "with invalid format character '%c'\n", c);
> +			pr_err("acpi_evalf() called with invalid format character '%c'\n",
> +			       c);
>  			va_end(ap);
>  			return 0;
>  		}
> @@ -619,8 +619,8 @@ static int acpi_evalf(acpi_handle handle,
>  		break;
>  		/* add more types as needed */
>  	default:
> -		pr_err("acpi_evalf() called "
> -		       "with invalid format character '%c'\n", res_type);
> +		pr_err("acpi_evalf() called with invalid format character '%c'\n",
> +		       res_type);
>  		return 0;
>  	}
>  
> @@ -790,8 +790,8 @@ static int __init setup_acpi_notify(struct ibm_struct *ibm)
>  			ibm->acpi->type, dispatch_acpi_notify, ibm);
>  	if (ACPI_FAILURE(status)) {
>  		if (status == AE_ALREADY_EXISTS) {
> -			pr_notice("another device driver is already "
> -				  "handling %s events\n", ibm->name);
> +			pr_notice("another device driver is already handling %s events\n",
> +				  ibm->name);
>  		} else {
>  			pr_err("acpi_install_notify_handler(%s) failed: %s\n",
>  			       ibm->name, acpi_format_exception(status));
> @@ -1095,8 +1095,7 @@ static void printk_deprecated_attribute(const char * const what,
>  					const char * const details)
>  {
>  	tpacpi_log_usertask("deprecated sysfs attribute");
> -	pr_warn("WARNING: sysfs attribute %s is deprecated and "
> -		"will be removed. %s\n",
> +	pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n",
>  		what, details);
>  }
>  
> @@ -1828,8 +1827,7 @@ static void __init tpacpi_check_outdated_fw(void)
>  		 * best if the user upgrades the firmware anyway.
>  		 */
>  		pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
> -		pr_warn("WARNING: This firmware may be missing critical bug "
> -			"fixes and/or important features\n");
> +		pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n");
>  	}
>  }
>  
> @@ -2198,8 +2196,7 @@ static int hotkey_mask_set(u32 mask)
>  	 * a given event.
>  	 */
>  	if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
> -		pr_notice("asked for hotkey mask 0x%08x, but "
> -			  "firmware forced it to 0x%08x\n",
> +		pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n",
>  			  fwmask, hotkey_acpi_mask);
>  	}
>  
> @@ -2224,11 +2221,9 @@ static int hotkey_user_mask_set(const u32 mask)
>  	    (mask == 0xffff || mask == 0xffffff ||
>  	     mask == 0xffffffff)) {
>  		tp_warned.hotkey_mask_ff = 1;
> -		pr_notice("setting the hotkey mask to 0x%08x is likely "
> -			  "not the best way to go about it\n", mask);
> -		pr_notice("please consider using the driver defaults, "
> -			  "and refer to up-to-date thinkpad-acpi "
> -			  "documentation\n");
> +		pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n",
> +			  mask);
> +		pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n");
>  	}
>  
>  	/* Try to enable what the user asked for, plus whatever we need.
> @@ -2603,17 +2598,14 @@ static void hotkey_poll_setup(const bool may_warn)
>  					NULL, TPACPI_NVRAM_KTHREAD_NAME);
>  			if (IS_ERR(tpacpi_hotkey_task)) {
>  				tpacpi_hotkey_task = NULL;
> -				pr_err("could not create kernel thread "
> -				       "for hotkey polling\n");
> +				pr_err("could not create kernel thread for hotkey polling\n");
>  			}
>  		}
>  	} else {
>  		hotkey_poll_stop_sync();
>  		if (may_warn && (poll_driver_mask || poll_user_mask) &&
>  		    hotkey_poll_freq == 0) {
> -			pr_notice("hot keys 0x%08x and/or events 0x%08x "
> -				  "require polling, which is currently "
> -				  "disabled\n",
> +			pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n",
>  				  poll_user_mask, poll_driver_mask);
>  		}
>  	}
> @@ -2840,12 +2832,10 @@ static ssize_t hotkey_source_mask_store(struct device *dev,
>  	mutex_unlock(&hotkey_mutex);
>  
>  	if (rc < 0)
> -		pr_err("hotkey_source_mask: "
> -		       "failed to update the firmware event mask!\n");
> +		pr_err("hotkey_source_mask: failed to update the firmware event mask!\n");
>  
>  	if (r_ev)
> -		pr_notice("hotkey_source_mask: "
> -			  "some important events were disabled: 0x%04x\n",
> +		pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n",
>  			  r_ev);
>  
>  	tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
> @@ -3105,8 +3095,7 @@ static void hotkey_exit(void)
>  		   "restoring original HKEY status and mask\n");
>  	res = tp_features.hotkey_mask ? hotkey_mask_set(hotkey_orig_mask) : 0;
>  	if (hotkey_status_set(false) || res)
> -		pr_err("failed to restore hot key mask "
> -		       "to BIOS defaults\n");
> +		pr_err("failed to restore hot key mask to BIOS defaults\n");
>  }
>  
>  static void __init hotkey_unmap(const unsigned int scancode)
> @@ -3618,11 +3607,8 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
>  	 * userspace. tpacpi_detect_brightness_capabilities() must have
>  	 * been called before this point  */
>  	if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
> -		pr_info("This ThinkPad has standard ACPI backlight "
> -			"brightness control, supported by the ACPI "
> -			"video driver\n");
> -		pr_notice("Disabling thinkpad-acpi brightness events "
> -			  "by default...\n");
> +		pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n");
> +		pr_notice("Disabling thinkpad-acpi brightness events by default...\n");
>  
>  		/* Disable brightness up/down on Lenovo thinkpads when
>  		 * ACPI is handling them, otherwise it is plain impossible
> @@ -3791,7 +3777,7 @@ static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)
>  		    TP_ACPI_HOTKEYSCAN_EXTENDED_START -
>  		    TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) {
>  			pr_info("Unhandled adaptive keyboard key: 0x%x\n",
> -					scancode);
> +				scancode);
>  			return false;
>  		}
>  		keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY +
> @@ -3988,14 +3974,12 @@ static bool hotkey_notify_6xxx(const u32 hkey,
>  		/* recommended action: immediate sleep/hibernate */
>  		break;
>  	case TP_HKEY_EV_ALARM_SENSOR_HOT:
> -		pr_crit("THERMAL ALARM: "
> -			"a sensor reports something is too hot!\n");
> +		pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n");
>  		/* recommended action: warn user through gui, that */
>  		/* some internal component is too hot */
>  		break;
>  	case TP_HKEY_EV_ALARM_SENSOR_XHOT:
> -		pr_alert("THERMAL EMERGENCY: "
> -			 "a sensor reports something is extremely hot!\n");
> +		pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n");
>  		/* recommended action: immediate sleep/hibernate */
>  		break;
>  	case TP_HKEY_EV_AC_CHANGED:
> @@ -4120,8 +4104,8 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
>  		}
>  		if (!known_ev) {
>  			pr_notice("unhandled HKEY event 0x%04x\n", hkey);
> -			pr_notice("please report the conditions when this "
> -				  "event happened to %s\n", TPACPI_MAIL);
> +			pr_notice("please report the conditions when this event happened to %s\n",
> +				  TPACPI_MAIL);
>  		}
>  
>  		/* netlink events */
> @@ -4155,8 +4139,7 @@ static void hotkey_resume(void)
>  
>  	if (hotkey_status_set(true) < 0 ||
>  	    hotkey_mask_set(hotkey_acpi_mask) < 0)
> -		pr_err("error while attempting to reset the event "
> -		       "firmware interface\n");
> +		pr_err("error while attempting to reset the event firmware interface\n");
>  
>  	tpacpi_send_radiosw_update();
>  	hotkey_tablet_mode_notify_change();
> @@ -4208,12 +4191,8 @@ static void hotkey_enabledisable_warn(bool enable)
>  {
>  	tpacpi_log_usertask("procfs hotkey enable/disable");
>  	if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
> -		  pr_fmt("hotkey enable/disable functionality has been "
> -			 "removed from the driver.  "
> -			 "Hotkeys are always enabled.\n")))
> -		pr_err("Please remove the hotkey=enable module "
> -		       "parameter, it is deprecated.  "
> -		       "Hotkeys are always enabled.\n");
> +		  pr_fmt("hotkey enable/disable functionality has been removed from the driver.  Hotkeys are always enabled.\n")))
> +		pr_err("Please remove the hotkey=enable module parameter, it is deprecated.  Hotkeys are always enabled.\n");
>  }
>  
>  static int hotkey_write(char *buf)
> @@ -4871,8 +4850,7 @@ static void video_exit(void)
>  	dbg_printk(TPACPI_DBG_EXIT,
>  		   "restoring original video autoswitch mode\n");
>  	if (video_autosw_set(video_orig_autosw))
> -		pr_err("error while trying to restore original "
> -			"video autoswitch mode\n");
> +		pr_err("error while trying to restore original video autoswitch mode\n");
>  }
>  
>  static int video_outputsw_get(void)
> @@ -5962,8 +5940,7 @@ static int __init led_init(struct ibm_init_struct *iibm)
>  	}
>  
>  #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
> -	pr_notice("warning: userspace override of important "
> -		  "firmware LEDs is enabled\n");
> +	pr_notice("warning: userspace override of important firmware LEDs is enabled\n");
>  #endif
>  	return 0;
>  }
> @@ -5992,8 +5969,7 @@ static int led_read(struct seq_file *m)
>  		}
>  	}
>  
> -	seq_printf(m, "commands:\t"
> -		       "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
> +	seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n");
>  
>  	return 0;
>  }
> @@ -6366,13 +6342,10 @@ static int __init thermal_init(struct ibm_init_struct *iibm)
>  		if (ta1 == 0) {
>  			/* This is sheer paranoia, but we handle it anyway */
>  			if (acpi_tmp7) {
> -				pr_err("ThinkPad ACPI EC access misbehaving, "
> -				       "falling back to ACPI TMPx access "
> -				       "mode\n");
> +				pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n");
>  				thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
>  			} else {
> -				pr_err("ThinkPad ACPI EC access misbehaving, "
> -				       "disabling thermal sensors access\n");
> +				pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n");
>  				thermal_read_mode = TPACPI_THERMAL_NONE;
>  			}
>  		} else {
> @@ -6851,26 +6824,20 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
>  
>  	if (!brightness_enable) {
>  		dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
> -			   "brightness support disabled by "
> -			   "module parameter\n");
> +			   "brightness support disabled by module parameter\n");
>  		return 1;
>  	}
>  
>  	if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
>  		if (brightness_enable > 1) {
> -			pr_info("Standard ACPI backlight interface "
> -				"available, not loading native one\n");
> +			pr_info("Standard ACPI backlight interface available, not loading native one\n");
>  			return 1;
>  		} else if (brightness_enable == 1) {
> -			pr_warn("Cannot enable backlight brightness support, "
> -				"ACPI is already handling it.  Refer to the "
> -				"acpi_backlight kernel parameter.\n");
> +			pr_warn("Cannot enable backlight brightness support, ACPI is already handling it.  Refer to the acpi_backlight kernel parameter.\n");
>  			return 1;
>  		}
>  	} else if (tp_features.bright_acpimode && brightness_enable > 1) {
> -		pr_notice("Standard ACPI backlight interface not "
> -			  "available, thinkpad_acpi native "
> -			  "brightness control enabled\n");
> +		pr_notice("Standard ACPI backlight interface not available, thinkpad_acpi native brightness control enabled\n");
>  	}
>  
>  	/*
> @@ -6921,10 +6888,10 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
>  			"brightness is supported\n");
>  
>  	if (quirks & TPACPI_BRGHT_Q_ASK) {
> -		pr_notice("brightness: will use unverified default: "
> -			  "brightness_mode=%d\n", brightness_mode);
> -		pr_notice("brightness: please report to %s whether it works well "
> -			  "or not on your ThinkPad\n", TPACPI_MAIL);
> +		pr_notice("brightness: will use unverified default: brightness_mode=%d\n",
> +			  brightness_mode);
> +		pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n",
> +			  TPACPI_MAIL);
>  	}
>  
>  	/* Added by mistake in early 2007.  Probably useless, but it could
> @@ -6934,8 +6901,7 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
>  	backlight_update_status(ibm_backlight_device);
>  
>  	vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
> -			"brightness: registering brightness hotkeys "
> -			"as change notification\n");
> +		    "brightness: registering brightness hotkeys as change notification\n");
>  	tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
>  				| TP_ACPI_HKEY_BRGHTUP_MASK
>  				| TP_ACPI_HKEY_BRGHTDWN_MASK);
> @@ -7598,8 +7564,8 @@ static int __init volume_init(struct ibm_init_struct *iibm)
>  		return -EINVAL;
>  
>  	if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
> -		pr_err("UCMS step volume mode not implemented, "
> -		       "please contact %s\n", TPACPI_MAIL);
> +		pr_err("UCMS step volume mode not implemented, please contact %s\n",
> +		       TPACPI_MAIL);
>  		return 1;
>  	}
>  
> @@ -7612,8 +7578,7 @@ static int __init volume_init(struct ibm_init_struct *iibm)
>  	 */
>  	if (!alsa_enable) {
>  		vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
> -			    "ALSA mixer disabled by parameter, "
> -			    "not loading volume subdriver...\n");
> +			    "ALSA mixer disabled by parameter, not loading volume subdriver...\n");
>  		return 1;
>  	}
>  
> @@ -7705,12 +7670,9 @@ static int volume_read(struct seq_file *m)
>  		if (volume_control_allowed) {
>  			seq_printf(m, "commands:\tunmute, mute\n");
>  			if (!tp_features.mixer_no_level_control) {
> -				seq_printf(m,
> -					       "commands:\tup, down\n");
> -				seq_printf(m,
> -					       "commands:\tlevel <level>"
> -					       " (<level> is 0-%d)\n",
> -					       TP_EC_VOLUME_MAX);
> +				seq_printf(m, "commands:\tup, down\n");
> +				seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
> +					      TP_EC_VOLUME_MAX);
>  			}
>  		}
>  	}
> @@ -7733,10 +7695,8 @@ static int volume_write(char *buf)
>  	if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
>  		if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
>  			tp_warned.volume_ctrl_forbidden = 1;
> -			pr_notice("Console audio control in monitor mode, "
> -				  "changes are not allowed\n");
> -			pr_notice("Use the volume_control=1 module parameter "
> -				  "to enable volume control\n");
> +			pr_notice("Console audio control in monitor mode, changes are not allowed\n");
> +			pr_notice("Use the volume_control=1 module parameter to enable volume control\n");
>  		}
>  		return -EPERM;
>  	}
> @@ -8018,8 +7978,7 @@ TPACPI_HANDLE(sfan, ec, "SFAN",	/* 570 */
>  static void fan_quirk1_setup(void)
>  {
>  	if (fan_control_initial_status == 0x07) {
> -		pr_notice("fan_init: initial fan status is unknown, "
> -			  "assuming it is in auto mode\n");
> +		pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n");
>  		tp_features.fan_ctrl_status_undef = 1;
>  	}
>  }
> @@ -8416,8 +8375,8 @@ static void fan_watchdog_fire(struct work_struct *ignored)
>  	pr_notice("fan watchdog: enabling fan\n");
>  	rc = fan_set_enable();
>  	if (rc < 0) {
> -		pr_err("fan watchdog: error %d while enabling fan, "
> -		       "will try again later...\n", -rc);
> +		pr_err("fan watchdog: error %d while enabling fan, will try again later...\n",
> +		       rc);
>  		/* reschedule for later */
>  		fan_watchdog_reset();
>  	}
> @@ -8714,8 +8673,7 @@ static int __init fan_init(struct ibm_init_struct *iibm)
>  					"secondary fan support enabled\n");
>  			}
>  		} else {
> -			pr_err("ThinkPad ACPI EC access misbehaving, "
> -			       "fan status and control unavailable\n");
> +			pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n");
>  			return 1;
>  		}
>  	}
> @@ -8814,8 +8772,8 @@ static void fan_suspend(void)
>  	fan_control_resume_level = 0;
>  	rc = fan_get_status_safe(&fan_control_resume_level);
>  	if (rc < 0)
> -		pr_notice("failed to read fan level for later "
> -			  "restore during resume: %d\n", rc);
> +		pr_notice("failed to read fan level for later restore during resume: %d\n",
> +			  rc);
>  
>  	/* if it is undefined, don't attempt to restore it.
>  	 * KEEP THIS LAST */
> @@ -8934,20 +8892,17 @@ static int fan_read(struct seq_file *m)
>  			break;
>  
>  		default:
> -			seq_printf(m, " (<level> is 0-7, "
> -				       "auto, disengaged, full-speed)\n");
> +			seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n");
>  			break;
>  		}
>  	}
>  
>  	if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
>  		seq_printf(m, "commands:\tenable, disable\n"
> -			       "commands:\twatchdog <timeout> (<timeout> "
> -			       "is 0 (off), 1-120 (seconds))\n");
> +			       "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n");
>  
>  	if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
> -		seq_printf(m, "commands:\tspeed <speed>"
> -			       " (<speed> is 0-65535)\n");
> +		seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n");
>  
>  	return 0;
>  }
> @@ -9473,8 +9428,7 @@ static int __must_check __init get_thinkpad_model_data(
>  				tp->ec_release = (ec_fw_string[4] << 8)
>  						| ec_fw_string[5];
>  			} else {
> -				pr_notice("ThinkPad firmware release %s "
> -					  "doesn't match the known patterns\n",
> +				pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n",
>  					  ec_fw_string);
>  				pr_notice("please report this to %s\n",
>  					  TPACPI_MAIL);
> @@ -9669,8 +9623,7 @@ MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
>  
>  module_param(force_load, bool, 0444);
>  MODULE_PARM_DESC(force_load,
> -		 "Attempts to load the driver even on a "
> -		 "mis-identified ThinkPad when true");
> +		 "Attempts to load the driver even on a mis-identified ThinkPad when true");
>  
>  module_param_named(fan_control, fan_control_allowed, bool, 0444);
>  MODULE_PARM_DESC(fan_control,
> @@ -9678,8 +9631,7 @@ MODULE_PARM_DESC(fan_control,
>  
>  module_param_named(brightness_mode, brightness_mode, uint, 0444);
>  MODULE_PARM_DESC(brightness_mode,
> -		 "Selects brightness control strategy: "
> -		 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
> +		 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
>  
>  module_param(brightness_enable, uint, 0444);
>  MODULE_PARM_DESC(brightness_enable,
> @@ -9688,18 +9640,15 @@ MODULE_PARM_DESC(brightness_enable,
>  #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
>  module_param_named(volume_mode, volume_mode, uint, 0444);
>  MODULE_PARM_DESC(volume_mode,
> -		 "Selects volume control strategy: "
> -		 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
> +		 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
>  
>  module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
>  MODULE_PARM_DESC(volume_capabilities,
> -		 "Selects the mixer capabilites: "
> -		 "0=auto, 1=volume and mute, 2=mute only");
> +		 "Selects the mixer capabilites: 0=auto, 1=volume and mute, 2=mute only");
>  
>  module_param_named(volume_control, volume_control_allowed, bool, 0444);
>  MODULE_PARM_DESC(volume_control,
> -		 "Enables software override for the console audio "
> -		 "control when true");
> +		 "Enables software override for the console audio control when true");
>  
>  module_param_named(software_mute, software_mute_requested, bool, 0444);
>  MODULE_PARM_DESC(software_mute,
> @@ -9716,8 +9665,7 @@ MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
>  
>  #define TPACPI_PARAM(feature) \
>  	module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
> -	MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
> -			 "at module load, see documentation")
> +	MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation")
>  
>  TPACPI_PARAM(hotkey);
>  TPACPI_PARAM(bluetooth);

-- 
  Henrique Holschuh

  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot

Re: [PATCH v1 1/3] platform/x86: thinkpad_acpi: Make logic straight in hotkey_exit()

[Andy Shevchenko]

On Tue, 2017-05-09 at 14:02 -0300, Henrique de Moraes Holschuh wrote:

Thanks for review, my comments below.

> On Tue, 09 May 2017, Andy Shevchenko wrote:
> > The commit 4be73005e4dc
> > 
> > 	("thinkpad-acpi: remove uneeded tp_features.hotkey tests in
> > hotkey_exit")
> > 
> > adds a complex logic behind hotkey status check in a way
> > it started mixing logical operations with bitwise ones.
> > 
> > Refactor the code to make it straight and slightly clearer.
> 
> Eh, I find this actually less clear, given the comment that was in the
> old code, which you deleted.

For me doing 'bitwise or' on negative return code and boolean looks
weird...

> 
> Please keep the important part of the comment at the very least.

...that's why comment has been added I suppose, and my patch makes it
not needed.

Though, I better just drop the change completely, I didn't pay attention
if compiler warns about current implementation, I think it should.

> 
> > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> > ---
> >  drivers/platform/x86/thinkpad_acpi.c | 9 ++++-----
> >  1 file changed, 4 insertions(+), 5 deletions(-)
> > 
> > diff --git a/drivers/platform/x86/thinkpad_acpi.c
> > b/drivers/platform/x86/thinkpad_acpi.c
> > index 7b6cb0c69b02..7740b5e1b998 100644
> > --- a/drivers/platform/x86/thinkpad_acpi.c
> > +++ b/drivers/platform/x86/thinkpad_acpi.c
> > @@ -3090,6 +3090,8 @@ static void tpacpi_send_radiosw_update(void)
> >  
> >  static void hotkey_exit(void)
> >  {
> > +	int res;
> > +
> >  #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
> >  	mutex_lock(&hotkey_mutex);
> >  	hotkey_poll_stop_sync();
> > @@ -3101,11 +3103,8 @@ static void hotkey_exit(void)
> >  
> >  	dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
> >  		   "restoring original HKEY status and mask\n");
> > -	/* yes, there is a bitwise or below, we want the
> > -	 * functions to be called even if one of them fail */
> > -	if (((tp_features.hotkey_mask &&
> > -	      hotkey_mask_set(hotkey_orig_mask)) |
> > -	     hotkey_status_set(false)) != 0)
> > +	res = tp_features.hotkey_mask ?
> > hotkey_mask_set(hotkey_orig_mask) : 0;
> > +	if (hotkey_status_set(false) || res)
> >  		pr_err("failed to restore hot key mask "
> >  		       "to BIOS defaults\n");
> >  }
> 
> 

-- 
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy

Re: [PATCH v1 2/3] platform/x86: thinkpad_acpi: Join string literals back

[Andy Shevchenko]

On Tue, 2017-05-09 at 14:10 -0300, Henrique de Moraes Holschuh wrote:

Thanks for review, my comments below.

> On Tue, 09 May 2017, Andy Shevchenko wrote:
> > There is no point to keep string literal split. It even makes
> > slightly
> > harder to maintain and debug.
> 
> Ooold code, from a time when random people would annoy others over
> 80-column instead of doing useful reviews...

Yes, I know, nowadays checkpatch doesn't complain on them.

> > While here, print negative error without changing a sign as it is a
> > common pattern in the kernel.
> 
> A separate patch for this would be better: it would be easier to
> actually check that no functional changes crept in by mistake.

It doesn't make sense to me. It would touch same lines of code I do
already here and it's only one place, see below.

> >  	rc = fan_set_enable();
> >  	if (rc < 0) {
> > -		pr_err("fan watchdog: error %d while enabling fan,
> > "
> > -		       "will try again later...\n", -rc);
> > +		pr_err("fan watchdog: error %d while enabling fan,
> > will try again later...\n",
> > +		       rc);


-- 
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy

Re: [PATCH v1 2/3] platform/x86: thinkpad_acpi: Join string literals back

[Henrique de Moraes Holschuh]

On Tue, May 9, 2017, at 14:33, Andy Shevchenko wrote:
> On Tue, 2017-05-09 at 14:10 -0300, Henrique de Moraes Holschuh wrote:
> > > While here, print negative error without changing a sign as it is a
> > > common pattern in the kernel.
> > 
> > A separate patch for this would be better: it would be easier to
> > actually check that no functional changes crept in by mistake.
> 
> It doesn't make sense to me. It would touch same lines of code I do
> already here and it's only one place, see below.

I had to go line-by-line looking for the darn thing, instead of just
compiling before-and-after and checking for an unchanged  object file.

> > >  	rc = fan_set_enable();
> > >  	if (rc < 0) {
> > > -		pr_err("fan watchdog: error %d while enabling fan,
> > > "
> > > -		       "will try again later...\n", -rc);
> > > +		pr_err("fan watchdog: error %d while enabling fan,
> > > will try again later...\n",
> > > +		       rc);

Yeah. This one.  I don't have a problem with this change at all (I acked
it), but it took some effort to find the nail in the hailstack.

-- 
  Henrique Holschuh

Re: [PATCH v1 2/3] platform/x86: thinkpad_acpi: Join string literals back

[Andy Shevchenko]

On Tue, 2017-05-09 at 21:24 -0300, Henrique de Moraes Holschuh wrote:
> On Tue, May 9, 2017, at 14:33, Andy Shevchenko wrote:
> > On Tue, 2017-05-09 at 14:10 -0300, Henrique de Moraes Holschuh
> > wrote:
> > > > While here, print negative error without changing a sign as it
> > > > is a
> > > > common pattern in the kernel.
> > > 
> > > A separate patch for this would be better: it would be easier to
> > > actually check that no functional changes crept in by mistake.
> > 
> > It doesn't make sense to me. It would touch same lines of code I do
> > already here and it's only one place, see below.
> 
> I had to go line-by-line looking for the darn thing, instead of just
> compiling before-and-after and checking for an unchanged  object file.
> 
> > > >  	rc = fan_set_enable();
> > > >  	if (rc < 0) {
> > > > -		pr_err("fan watchdog: error %d while enabling
> > > > fan,
> > > > "
> > > > -		       "will try again later...\n", -rc);
> > > > +		pr_err("fan watchdog: error %d while enabling
> > > > fan,
> > > > will try again later...\n",
> > > > +		       rc);
> 
> Yeah. This one.  I don't have a problem with this change at all (I
> acked
> it), but it took some effort to find the nail in the hailstack.

Okay, what I'm going to do is:
1) drop patch 1 for now;
2) split patch 2 into two patches (and append your Ack on both);
3) push to our testing branch (I can send v2 if we need one more round
of review).

Tell me if there is any objection.

-- 
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy

Re: [PATCH v1 2/3] platform/x86: thinkpad_acpi: Join string literals back

[Henrique de Moraes Holschuh]

On Wed, 10 May 2017, Andy Shevchenko wrote:
> Okay, what I'm going to do is:
> 1) drop patch 1 for now;
> 2) split patch 2 into two patches (and append your Ack on both);
> 3) push to our testing branch (I can send v2 if we need one more round
> of review).
> 
> Tell me if there is any objection.

Eh, I already went through the patch and acked it, so you can send it
as-is if you want to.  That said, I am also fine if you break it into
two and add my ack to both.

-- 
  Henrique Holschuh