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author | Nathan Chancellor <nathan@kernel.org> | 2021-08-24 15:54:26 -0700 |
---|---|---|
committer | Jani Nikula <jani.nikula@intel.com> | 2021-09-14 19:48:30 +0300 |
commit | 347c4db2afc7f9cf536144d167579ccf1e9bf028 (patch) | |
tree | cdce1a1050fe98829d5c168666527524fad69f7f /drivers | |
parent | 4ad3ea1c69354328edcccb83c8a4d7d2f55e3c6a (diff) | |
download | linux-347c4db2afc7f9cf536144d167579ccf1e9bf028.tar.bz2 |
drm/i915/selftests: Always initialize err in igt_dmabuf_import_same_driver_lmem()
Clang warns:
drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:127:13: warning:
variable 'err' is used uninitialized whenever 'if' condition is false
[-Wsometimes-uninitialized]
} else if (PTR_ERR(import) != -EOPNOTSUPP) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:138:9: note:
uninitialized use occurs here
return err;
^~~
drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:127:9: note: remove
the 'if' if its condition is always true
} else if (PTR_ERR(import) != -EOPNOTSUPP) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:95:9: note:
initialize the variable 'err' to silence this warning
int err;
^
= 0
The test is expected to pass if i915_gem_prime_import() returns
-EOPNOTSUPP so initialize err to zero in this case.
Fixes: cdb35d1ed6d2 ("drm/i915/gem: Migrate to system at dma-buf attach time (v7)")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210824225427.2065517-3-nathan@kernel.org
(cherry picked from commit 46f20a353b80d02492655d99714f0566018a17e8)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c index 532c7955b300..4a6bb64c3a35 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c @@ -128,6 +128,8 @@ static int igt_dmabuf_import_same_driver_lmem(void *arg) pr_err("i915_gem_prime_import failed with the wrong err=%ld\n", PTR_ERR(import)); err = PTR_ERR(import); + } else { + err = 0; } dma_buf_put(dmabuf); |