From: Arnd Bergmann <arnd@arndb.de>
To: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>,
linux-media@vger.kernel.org, devel@driverdev.osuosl.org,
linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com,
Arnd Bergmann <arnd@arndb.de>
Subject: [PATCH 4/9] staging: media: atomisp: fix a type conversion warning
Date: Fri, 29 May 2020 22:00:26 +0200 [thread overview]
Message-ID: <20200529200031.4117841-4-arnd@arndb.de> (raw)
In-Reply-To: <20200529200031.4117841-1-arnd@arndb.de>
clang complains that the type conversion in the MAX() macro
contains an implied integer overflow to a signed number:
drivers/staging/media/atomisp/pci/isp/kernels/xnr/xnr_3.0/ia_css_xnr3.host.c:129:35:
error: implicit conversion from 'unsigned long' to 'int32_t' (aka 'int') changes value from 18446744073709543424 to -8192 [-Werror,-Wconstant-conversion]
As the conversion is clearly intended here, use an explicit cast.
Fixes: 9a0d7fb5ece6 ("media: atomisp: simplify math_support.h")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
.../atomisp/pci/isp/kernels/xnr/xnr_3.0/ia_css_xnr3.host.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/media/atomisp/pci/isp/kernels/xnr/xnr_3.0/ia_css_xnr3.host.c b/drivers/staging/media/atomisp/pci/isp/kernels/xnr/xnr_3.0/ia_css_xnr3.host.c
index a9db6366d20b..613bace0522a 100644
--- a/drivers/staging/media/atomisp/pci/isp/kernels/xnr/xnr_3.0/ia_css_xnr3.host.c
+++ b/drivers/staging/media/atomisp/pci/isp/kernels/xnr/xnr_3.0/ia_css_xnr3.host.c
@@ -126,7 +126,7 @@ compute_blending(int strength)
* exactly as s0.11 fixed point, but -1.0 can.
*/
isp_strength = -(((strength * isp_scale) + offset) / host_scale);
- return MAX(MIN(isp_strength, 0), -XNR_BLENDING_SCALE_FACTOR);
+ return MAX(MIN(isp_strength, 0), -(unsigned int)XNR_BLENDING_SCALE_FACTOR);
}
void
--
2.26.2
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: devel@driverdev.osuosl.org, Arnd Bergmann <arnd@arndb.de>,
linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com,
Sakari Ailus <sakari.ailus@linux.intel.com>,
linux-media@vger.kernel.org
Subject: [PATCH 4/9] staging: media: atomisp: fix a type conversion warning
Date: Fri, 29 May 2020 22:00:26 +0200 [thread overview]
Message-ID: <20200529200031.4117841-4-arnd@arndb.de> (raw)
In-Reply-To: <20200529200031.4117841-1-arnd@arndb.de>
clang complains that the type conversion in the MAX() macro
contains an implied integer overflow to a signed number:
drivers/staging/media/atomisp/pci/isp/kernels/xnr/xnr_3.0/ia_css_xnr3.host.c:129:35:
error: implicit conversion from 'unsigned long' to 'int32_t' (aka 'int') changes value from 18446744073709543424 to -8192 [-Werror,-Wconstant-conversion]
As the conversion is clearly intended here, use an explicit cast.
Fixes: 9a0d7fb5ece6 ("media: atomisp: simplify math_support.h")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
.../atomisp/pci/isp/kernels/xnr/xnr_3.0/ia_css_xnr3.host.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/media/atomisp/pci/isp/kernels/xnr/xnr_3.0/ia_css_xnr3.host.c b/drivers/staging/media/atomisp/pci/isp/kernels/xnr/xnr_3.0/ia_css_xnr3.host.c
index a9db6366d20b..613bace0522a 100644
--- a/drivers/staging/media/atomisp/pci/isp/kernels/xnr/xnr_3.0/ia_css_xnr3.host.c
+++ b/drivers/staging/media/atomisp/pci/isp/kernels/xnr/xnr_3.0/ia_css_xnr3.host.c
@@ -126,7 +126,7 @@ compute_blending(int strength)
* exactly as s0.11 fixed point, but -1.0 can.
*/
isp_strength = -(((strength * isp_scale) + offset) / host_scale);
- return MAX(MIN(isp_strength, 0), -XNR_BLENDING_SCALE_FACTOR);
+ return MAX(MIN(isp_strength, 0), -(unsigned int)XNR_BLENDING_SCALE_FACTOR);
}
void
--
2.26.2
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next prev parent reply other threads:[~2020-05-29 20:01 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-29 20:00 [PATCH 1/9] staging: media: atomisp: fix incorrect NULL pointer check Arnd Bergmann
2020-05-29 20:00 ` Arnd Bergmann
2020-05-29 20:00 ` [PATCH 2/9] staging: media: atomisp: declare 'struct device' before using it Arnd Bergmann
2020-05-29 20:00 ` Arnd Bergmann
2020-05-30 2:55 ` Nathan Chancellor
2020-05-30 2:55 ` Nathan Chancellor
2020-05-29 20:00 ` [PATCH 3/9] staging: media: atomisp: annotate an unused function Arnd Bergmann
2020-05-29 20:00 ` Arnd Bergmann
2020-05-30 2:56 ` Nathan Chancellor
2020-05-30 2:56 ` Nathan Chancellor
2020-05-29 20:00 ` Arnd Bergmann [this message]
2020-05-29 20:00 ` [PATCH 4/9] staging: media: atomisp: fix a type conversion warning Arnd Bergmann
2020-05-29 20:00 ` [PATCH 5/9] staging: media: atomisp: fix stack overflow in init_pipe_defaults() Arnd Bergmann
2020-05-29 20:00 ` Arnd Bergmann
2020-05-30 2:57 ` Nathan Chancellor
2020-05-30 2:57 ` Nathan Chancellor
2020-05-31 20:41 ` kbuild test robot
2020-05-29 20:00 ` [PATCH 6/9] staging: media: atomisp: fix type mismatch Arnd Bergmann
2020-05-29 20:00 ` Arnd Bergmann
2020-05-29 20:00 ` [PATCH 7/9] staging: media: atomisp: fix enum type mixups Arnd Bergmann
2020-05-29 20:00 ` Arnd Bergmann
2020-05-30 3:00 ` Nathan Chancellor
2020-05-30 3:00 ` Nathan Chancellor
2020-05-29 20:00 ` [PATCH 8/9] staging: media: atomisp: disable all custom formats Arnd Bergmann
2020-05-29 20:00 ` Arnd Bergmann
2020-05-30 3:03 ` Nathan Chancellor
2020-05-30 3:03 ` Nathan Chancellor
2020-05-29 20:00 ` [PATCH 9/9] staging: media: atomisp: add PMIC_OPREGION dependency Arnd Bergmann
2020-05-29 20:00 ` Arnd Bergmann
2020-05-30 3:11 ` Nathan Chancellor
2020-05-30 3:11 ` Nathan Chancellor
2020-05-30 5:25 ` Mauro Carvalho Chehab
2020-05-30 5:25 ` Mauro Carvalho Chehab
2020-05-29 20:04 ` [PATCH 1/9] staging: media: atomisp: fix incorrect NULL pointer check Nick Desaulniers
2020-05-29 20:04 ` Nick Desaulniers
2020-05-29 20:23 ` Arnd Bergmann
2020-05-29 20:23 ` Arnd Bergmann
2020-05-29 20:31 ` Arnd Bergmann
2020-05-29 20:31 ` Arnd Bergmann
2020-05-30 2:49 ` Nathan Chancellor
2020-05-30 2:49 ` Nathan Chancellor
2020-05-30 9:22 ` Mauro Carvalho Chehab
2020-05-30 9:22 ` Mauro Carvalho Chehab
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