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drm/xe: switch to local xbasename() helper

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Commit b0a2ee5567 ("drm/xe: prepare xe_gen_wa_oob to be multi-use")
introduced a call to basename(). The GNU version of this function is not
portable and fails to build with alternative libc implementations like
musl or bionic. This causes the following build error:

  drivers/gpu/drm/xe/xe_gen_wa_oob.c:130:12: error: assignment to ‘const char *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
    130 |         fn = basename(fn);
        |            ^

While a POSIX version of basename() could be used, it would require a
separate header plus the behavior differs from GNU version in that it
might modify its argument. Not great.

Instead, implement a local xbasename() helper based on strrchr() that
provides the same functionality and avoids portability issues.

Fixes: b0a2ee5567 ("drm/xe: prepare xe_gen_wa_oob to be multi-use")
Suggested-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Tiffany Yang <ynaffit@google.com>
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250825155743.1132433-1-cmllamas@google.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
(cherry picked from commit 41be792f5baaf90d744a9a9e82994ce560ca9582)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Carlos Llamas 2025-08-25 15:57:42 +00:00 committed by Rodrigo Vivi
parent 16ca06aa2c
commit 75671d90fd
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1 changed files with 9 additions and 1 deletions
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10
drivers/gpu/drm/xe/xe_gen_wa_oob.c
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@ -123,11 +123,19 @@ static int parse(FILE *input, FILE *csource, FILE *cheader, char *prefix)
return 0;
}
/* Avoid GNU vs POSIX basename() discrepancy, just use our own */
static const char *xbasename(const char *s)
{
const char *p = strrchr(s, '/');
return p ? p + 1 : s;
}
static int fn_to_prefix(const char *fn, char *prefix, size_t size)
{
size_t len;
fn = basename(fn);
fn = xbasename(fn);
len = strlen(fn);
if (len > size - 1)