From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
To: Linux ACPI <linux-acpi@vger.kernel.org>
Cc: Linux PM <linux-pm@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Zhang Rui <rui.zhang@intel.com>,
Rajneesh Bhardwaj <rajneesh.bhardwaj@linux.intel.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Mario Limonciello <mario.limonciello@dell.com>,
Kai-Heng Feng <kai.heng.feng@canonical.com>
Subject: [PATCH v3 2/8] ACPI: PM: s2idle: Rearrange lps0_device_attach()
Date: Fri, 02 Aug 2019 12:38:34 +0200 [thread overview]
Message-ID: <1674293.dTdQWrCe23@kreacher> (raw)
In-Reply-To: <5997740.FPbUVk04hV@kreacher>
From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
To allow a subsequent change to be simpler, rearrange the code in
lps0_device_attach() to reduce the indentation level and (while
at it) make it avoid calling lpi_device_get_constraints() when
lps0_device_handle is not going to be set.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
In v2 this was patch 3.
---
drivers/acpi/sleep.c | 32 +++++++++++++++++---------------
1 file changed, 17 insertions(+), 15 deletions(-)
Index: linux-pm/drivers/acpi/sleep.c
===================================================================
--- linux-pm.orig/drivers/acpi/sleep.c
+++ linux-pm/drivers/acpi/sleep.c
@@ -916,28 +916,30 @@ static int lps0_device_attach(struct acp
guid_parse(ACPI_LPS0_DSM_UUID, &lps0_dsm_guid);
/* Check if the _DSM is present and as expected. */
out_obj = acpi_evaluate_dsm(adev->handle, &lps0_dsm_guid, 1, 0, NULL);
- if (out_obj && out_obj->type == ACPI_TYPE_BUFFER) {
- char bitmask = *(char *)out_obj->buffer.pointer;
-
- lps0_dsm_func_mask = bitmask;
- lps0_device_handle = adev->handle;
- /*
- * Use suspend-to-idle by default if the default
- * suspend mode was not set from the command line.
- */
- if (mem_sleep_default > PM_SUSPEND_MEM)
- mem_sleep_current = PM_SUSPEND_TO_IDLE;
-
- acpi_handle_debug(adev->handle, "_DSM function mask: 0x%x\n",
- bitmask);
- } else {
+ if (!out_obj || out_obj->type != ACPI_TYPE_BUFFER) {
acpi_handle_debug(adev->handle,
"_DSM function 0 evaluation failed\n");
+ return 0;
}
+
+ lps0_dsm_func_mask = *(char *)out_obj->buffer.pointer;
+
ACPI_FREE(out_obj);
+ acpi_handle_debug(adev->handle, "_DSM function mask: 0x%x\n",
+ lps0_dsm_func_mask);
+
+ lps0_device_handle = adev->handle;
+
lpi_device_get_constraints();
+ /*
+ * Use suspend-to-idle by default if the default suspend mode was not
+ * set from the command line.
+ */
+ if (mem_sleep_default > PM_SUSPEND_MEM)
+ mem_sleep_current = PM_SUSPEND_TO_IDLE;
+
return 0;
}
next prev parent reply other threads:[~2019-08-02 10:46 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-02 10:33 [PATCH v3 0/8] PM / ACPI: sleep: Additional changes related to suspend-to-idle Rafael J. Wysocki
2019-08-02 10:38 ` [PATCH v3 1/8] ACPI: PM: Set up EC GPE for system wakeup from drivers that need it Rafael J. Wysocki
2019-08-02 10:38 ` Rafael J. Wysocki [this message]
2019-08-02 10:38 ` [PATCH v3 3/8] ACPI: PM: s2idle: Add acpi.sleep_no_lps0 module parameter Rafael J. Wysocki
2019-08-02 10:40 ` [PATCH v3 4/8] ACPI: PM: s2idle: Switch EC over to polling during "noirq" suspend Rafael J. Wysocki
2019-08-02 10:41 ` [PATCH v3 5/8] ACPI: PM: s2idle: Eliminate acpi_sleep_no_ec_events() Rafael J. Wysocki
2019-08-02 10:43 ` [PATCH v3 6/8] ACPI: EC: PM: Consolidate some code depending on PM_SLEEP Rafael J. Wysocki
2019-08-02 10:44 ` [PATCH v3 7/8] ACPI: EC: PM: Make acpi_ec_dispatch_gpe() print debug message Rafael J. Wysocki
2019-08-02 10:45 ` [PATCH v3 8/8] ACPI: PM: s2idle: Execute LPS0 _DSM functions with suspended devices Rafael J. Wysocki
[not found] ` <CGME20190809120052eucas1p11b56806662ef4f4efb82a152ad651481@eucas1p1.samsung.com>
2019-08-09 12:00 ` Marek Szyprowski
2019-08-09 12:15 ` Rafael J. Wysocki
2019-08-10 11:24 ` [PATCH] PM: suspend: Fix platform_suspend_prepare_noirq() Rafael J. Wysocki
2019-08-05 16:25 ` [PATCH v3 0/8] PM / ACPI: sleep: Additional changes related to suspend-to-idle Kai-Heng Feng
2019-08-12 13:55 ` Bhardwaj, Rajneesh
2019-08-12 21:32 ` Rafael J. Wysocki
2019-08-16 20:20 ` Kristian Klausen
2019-08-19 7:59 ` Rafael J. Wysocki
2019-08-19 9:05 ` Rafael J. Wysocki
2019-08-19 15:45 ` Kristian Klausen
2019-08-19 20:41 ` Rafael J. Wysocki
2019-08-20 13:10 ` Kristian Klausen
2019-08-20 13:29 ` Rafael J. Wysocki
2019-08-20 21:38 ` Rafael J. Wysocki
2019-08-20 22:47 ` Kristian Klausen
2019-08-21 7:30 ` Rafael J. Wysocki
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