From: Arnd Bergmann <arnd@arndb.de>
To: Alan Cox <alan@linux.intel.com>,
Sakari Ailus <sakari.ailus@linux.intel.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Arnd Bergmann" <arnd@arndb.de>,
"Jérémy Lefaure" <jeremy.lefaure@lse.epita.fr>,
"Sergiy Redko" <sergredko@gmail.com>,
linux-media@vger.kernel.org, devel@driverdev.osuosl.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] staging: media: atomisp: remove pointless string copy
Date: Fri, 2 Feb 2018 16:19:41 +0100 [thread overview]
Message-ID: <20180202152009.843231-1-arnd@arndb.de> (raw)
gcc-8 points out that a string is copied to itself here:
In file included from drivers/staging/media/atomisp/pci/atomisp2/css2400/hive_isp_css_include/platform_support.h:25,
from drivers/staging/media/atomisp/pci/atomisp2/css2400/hive_isp_css_include/memory_access/memory_access.h:48,
from drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/debug/src/ia_css_debug.c:16:
In function 'strncpy',
inlined from 'ia_css_debug_pipe_graph_dump_stage' at drivers/staging/media/atomisp/pci/atomisp2/css2400/hive_isp_css_include/string_support.h:158:2:
include/linux/string.h:253:9: error: '__builtin_strncpy' source argument is the same as destination [-Werror=restrict]
return __builtin_strncpy(p, q, size);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This removes the bogus code, leaving the behavior otherwise
unchanged.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
.../atomisp/pci/atomisp2/css2400/runtime/debug/src/ia_css_debug.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/debug/src/ia_css_debug.c b/drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/debug/src/ia_css_debug.c
index f22d73b56bc6..60395904f89a 100644
--- a/drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/debug/src/ia_css_debug.c
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/debug/src/ia_css_debug.c
@@ -2858,13 +2858,7 @@ ia_css_debug_pipe_graph_dump_stage(
if (l && enable_info[l-1] == ',')
enable_info[--l] = '\0';
- if (l <= ENABLE_LINE_MAX_LENGTH) {
- /* It fits on one line, copy string and init */
- /* other helper strings with empty string */
- strcpy_s(enable_info,
- sizeof(enable_info),
- ei);
- } else {
+ if (l > ENABLE_LINE_MAX_LENGTH) {
/* Too big for one line, find last comma */
p = ENABLE_LINE_MAX_LENGTH;
while (ei[p] != ',')
--
2.9.0
reply other threads:[~2018-02-02 15:19 UTC|newest]
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