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From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: "Harry Wentland" <harry.wentland@amd.com>,
	"Leo Li" <sunpeng.li@amd.com>,
	"Alex Deucher" <alexander.deucher@amd.com>,
	"Christian König" <christian.koenig@amd.com>,
	"Pan, Xinhui" <Xinhui.Pan@amd.com>,
	"David Airlie" <airlied@linux.ie>,
	"Daniel Vetter" <daniel@ffwll.ch>
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>,
	linux-hardening@vger.kernel.org, dri-devel@lists.freedesktop.org,
	amd-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: [PATCH][next] drm/amd/display: Fix fall-through warning for Clang
Date: Wed, 16 Jun 2021 15:52:06 -0500	[thread overview]
Message-ID: <20210616205206.GA17547@embeddedor> (raw)

In preparation to enable -Wimplicit-fallthrough for Clang, fix
the following warning by replacing a /* fall through */ comment
with the new pseudo-keyword macro fallthrough:

rivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_aux.c:672:4: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
                        case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER:
                        ^

Notice that Clang doesn't recognize /* fall through */ comments as
implicit fall-through markings, so in order to globally enable
-Wimplicit-fallthrough for Clang, these comments need to be
replaced with fallthrough; in the whole codebase.

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
JFYI: We had thousands of these sorts of warnings and now we are down
      to just 15 in linux-next. This is one of those last remaining
      warnings.

 drivers/gpu/drm/amd/display/dc/dce/dce_aux.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
index 28631714f697..2fb88e54a4bf 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
@@ -668,7 +668,7 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc,
 				/* polling_timeout_period is in us */
 				defer_time_in_ms += aux110->polling_timeout_period / 1000;
 				++aux_defer_retries;
-				/* fall through */
+				fallthrough;
 			case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER:
 				retry_on_defer = true;
 				fallthrough;
-- 
2.27.0

_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

WARNING: multiple messages have this Message-ID (diff)
From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: "Harry Wentland" <harry.wentland@amd.com>,
	"Leo Li" <sunpeng.li@amd.com>,
	"Alex Deucher" <alexander.deucher@amd.com>,
	"Christian König" <christian.koenig@amd.com>,
	"Pan, Xinhui" <Xinhui.Pan@amd.com>,
	"David Airlie" <airlied@linux.ie>,
	"Daniel Vetter" <daniel@ffwll.ch>
Cc: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
	linux-kernel@vger.kernel.org,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>,
	linux-hardening@vger.kernel.org
Subject: [PATCH][next] drm/amd/display: Fix fall-through warning for Clang
Date: Wed, 16 Jun 2021 15:52:06 -0500	[thread overview]
Message-ID: <20210616205206.GA17547@embeddedor> (raw)

In preparation to enable -Wimplicit-fallthrough for Clang, fix
the following warning by replacing a /* fall through */ comment
with the new pseudo-keyword macro fallthrough:

rivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_aux.c:672:4: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
                        case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER:
                        ^

Notice that Clang doesn't recognize /* fall through */ comments as
implicit fall-through markings, so in order to globally enable
-Wimplicit-fallthrough for Clang, these comments need to be
replaced with fallthrough; in the whole codebase.

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
JFYI: We had thousands of these sorts of warnings and now we are down
      to just 15 in linux-next. This is one of those last remaining
      warnings.

 drivers/gpu/drm/amd/display/dc/dce/dce_aux.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
index 28631714f697..2fb88e54a4bf 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
@@ -668,7 +668,7 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc,
 				/* polling_timeout_period is in us */
 				defer_time_in_ms += aux110->polling_timeout_period / 1000;
 				++aux_defer_retries;
-				/* fall through */
+				fallthrough;
 			case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER:
 				retry_on_defer = true;
 				fallthrough;
-- 
2.27.0


WARNING: multiple messages have this Message-ID (diff)
From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: "Harry Wentland" <harry.wentland@amd.com>,
	"Leo Li" <sunpeng.li@amd.com>,
	"Alex Deucher" <alexander.deucher@amd.com>,
	"Christian König" <christian.koenig@amd.com>,
	"Pan, Xinhui" <Xinhui.Pan@amd.com>,
	"David Airlie" <airlied@linux.ie>,
	"Daniel Vetter" <daniel@ffwll.ch>
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>,
	linux-hardening@vger.kernel.org, dri-devel@lists.freedesktop.org,
	amd-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: [PATCH][next] drm/amd/display: Fix fall-through warning for Clang
Date: Wed, 16 Jun 2021 15:52:06 -0500	[thread overview]
Message-ID: <20210616205206.GA17547@embeddedor> (raw)

In preparation to enable -Wimplicit-fallthrough for Clang, fix
the following warning by replacing a /* fall through */ comment
with the new pseudo-keyword macro fallthrough:

rivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_aux.c:672:4: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
                        case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER:
                        ^

Notice that Clang doesn't recognize /* fall through */ comments as
implicit fall-through markings, so in order to globally enable
-Wimplicit-fallthrough for Clang, these comments need to be
replaced with fallthrough; in the whole codebase.

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
JFYI: We had thousands of these sorts of warnings and now we are down
      to just 15 in linux-next. This is one of those last remaining
      warnings.

 drivers/gpu/drm/amd/display/dc/dce/dce_aux.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
index 28631714f697..2fb88e54a4bf 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
@@ -668,7 +668,7 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc,
 				/* polling_timeout_period is in us */
 				defer_time_in_ms += aux110->polling_timeout_period / 1000;
 				++aux_defer_retries;
-				/* fall through */
+				fallthrough;
 			case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER:
 				retry_on_defer = true;
 				fallthrough;
-- 
2.27.0


             reply	other threads:[~2021-06-16 20:50 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-16 20:52 Gustavo A. R. Silva [this message]
2021-06-16 20:52 ` [PATCH][next] drm/amd/display: Fix fall-through warning for Clang Gustavo A. R. Silva
2021-06-16 20:52 ` Gustavo A. R. Silva
2021-06-17 19:20 ` Harry Wentland
2021-06-17 19:20   ` Harry Wentland
2021-06-17 19:20   ` Harry Wentland
2021-06-18 20:36   ` Alex Deucher
2021-06-18 20:36     ` Alex Deucher
2021-06-18 20:36     ` Alex Deucher

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