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From: Gwendal Grignou <gwendal@chromium.org>
To: enric.balletbo@collabora.com, bleung@chromium.org,
	groeck@chromium.org, lee.jones@linaro.org, jic23@kernel.org,
	broonie@kernel.org, cychiang@chromium.org, tiwai@suse.com
Cc: linux-iio@vger.kernel.org, alsa-devel@alsa-project.org,
	linux-kernel@vger.kernel.org,
	Gwendal Grignou <gwendal@chromium.org>
Subject: [PATCH v3 09/30] mfd: cros_ec: Remove zero-size structs
Date: Thu,  9 May 2019 14:13:32 -0700
Message-ID: <20190509211353.213194-10-gwendal@chromium.org> (raw)
In-Reply-To: <20190509211353.213194-1-gwendal@chromium.org>

Empty structure size is different between C and C++.
To prevent clang warning when compiling this include file in C++
programs, remove empty structures.

Acked-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
---
 include/linux/mfd/cros_ec_commands.h | 33 +++++++++++++++-------------
 1 file changed, 18 insertions(+), 15 deletions(-)

diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
index d8bde2b5e9ce..fabf341af97f 100644
--- a/include/linux/mfd/cros_ec_commands.h
+++ b/include/linux/mfd/cros_ec_commands.h
@@ -1540,10 +1540,14 @@ struct lightbar_program {
 struct ec_params_lightbar {
 	uint8_t cmd;		      /* Command (see enum lightbar_command) */
 	union {
-		struct {
-			/* no args */
-		} dump, off, on, init, get_seq, get_params_v0, get_params_v1,
-			version, get_brightness, get_demo, suspend, resume;
+		/*
+		 * The following commands have no args:
+		 *
+		 * dump, off, on, init, get_seq, get_params_v0, get_params_v1,
+		 * version, get_brightness, get_demo, suspend, resume
+		 *
+		 * Don't use an empty struct, because C++ hates that.
+		 */
 
 		struct __ec_todo_unpacked {
 			uint8_t num;
@@ -1597,11 +1601,13 @@ struct ec_response_lightbar {
 			uint8_t red, green, blue;
 		} get_rgb;
 
-		struct {
-			/* no return params */
-		} off, on, init, set_brightness, seq, reg, set_rgb,
-			demo, set_params_v0, set_params_v1,
-			set_program, manual_suspend_ctrl, suspend, resume;
+		/*
+		 * The following commands have no response:
+		 *
+		 * off, on, init, set_brightness, seq, reg, set_rgb,
+		 * set_params_v0, set_params_v1, set_program,
+		 * manual_suspend_ctrl, suspend, resume
+		 */
 	};
 } __ec_todo_packed;
 
@@ -3021,9 +3027,7 @@ enum charge_state_params {
 struct ec_params_charge_state {
 	uint8_t cmd;				/* enum charge_state_command */
 	union {
-		struct {
-			/* no args */
-		} get_state;
+		/* get_state has no args */
 
 		struct __ec_todo_unpacked {
 			uint32_t param;		/* enum charge_state_param */
@@ -3049,9 +3053,8 @@ struct ec_response_charge_state {
 		struct __ec_align4 {
 			uint32_t value;
 		} get_param;
-		struct {
-			/* no return values */
-		} set_param;
+
+		/* set_param returns no args */
 	};
 } __ec_align4;
 
-- 
2.21.0.1020.gf2820cf01a-goog


  parent reply index

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-09 21:13 [PATCH v3 00/30] Update cros_ec_commands.h Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 01/30] mfd: cros_ec: Update license term Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 02/30] mfd: cros_ec: Zero BUILD_ macro Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 03/30] mfd: cros_ec: set comments properly Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 04/30] mfd: cros_ec: add ec_align macros Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 05/30] mfd: cros_ec: Define commands as 4-digit UPPER CASE hex values Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 06/30] mfd: cros_ec: use BIT macro Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 07/30] mfd: cros_ec: Update ACPI interface definition Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 08/30] mfd: cros_ec: move HDMI CEC API definition Gwendal Grignou
2019-05-09 21:13 ` Gwendal Grignou [this message]
2019-05-09 21:13 ` [PATCH v3 10/30] mfd: cros_ec: Add Flash V2 commands API Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 11/30] mfd: cros_ec: Add PWM_SET_DUTY API Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 12/30] mfd: cros_ec: Add lightbar v2 API Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 13/30] mfd: cros_ec: Expand hash API Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 14/30] mfd: cros_ec: Add EC transport protocol v4 Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 15/30] mfd: cros_ec: Complete MEMS sensor API Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 16/30] mfd: cros_ec: Fix event processing API Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 17/30] mfd: cros_ec: Add fingerprint API Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 18/30] mfd: cros_ec: Fix temperature API Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 19/30] mfd: cros_ec: Complete Power and USB PD API Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 20/30] mfd: cros_ec: Add API for keyboard testing Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 21/30] mfd: cros_ec: Add Hibernate API Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 22/30] mfd: cros_ec: Add Smart Battery Firmware update API Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 23/30] mfd: cros_ec: Add I2C passthru protection API Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 24/30] mfd: cros_ec: Add API for EC-EC communication Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 25/30] mfd: cros_ec: Add API for Touchpad support Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 26/30] mfd: cros_ec: Add API for Fingerprint support Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 27/30] mfd: cros_ec: Add API for rwsig Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 28/30] mfd: cros_ec: Add SKU ID and Secure storage API Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 29/30] mfd: cros_ec: Add Management API entry points Gwendal Grignou
2019-05-09 21:13 ` [PATCH v3 30/30] mfd: cros_ec: Update I2S API Gwendal Grignou
2019-05-17 22:48 ` [PATCH v3 00/30] Update cros_ec_commands.h Gwendal Grignou
2019-05-18  6:39   ` Lee Jones
2019-05-21 17:44     ` Benson Leung
2019-05-22  5:53       ` Lee Jones
2019-05-21 13:45 ` [alsa-devel] " Fabien Lahoudere
2019-05-22  5:53   ` Lee Jones
2019-06-03 12:53 ` Lee Jones

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