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| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2019-01-14 16:51:33 +0300 |
|---|---|---|
| committer | Shuah Khan <shuah@kernel.org> | 2019-01-17 01:02:57 +0300 |
| commit | 508cacd7da6659ae7b7bdd0a335f675422277758 (patch) | |
| tree | 8171cf2aade696312fea07ef6ab5c61a323df4cf /tools/testing/selftests/gpio/gpio-mockup-chardev.c | |
| parent | 5bbc73a841d7f0bbe025a342146dde462a796a5a (diff) | |
| download | linux-508cacd7da6659ae7b7bdd0a335f675422277758.tar.xz | |
selftests: gpio-mockup-chardev: Check asprintf() for error
With gcc 7.3.0:
gpio-mockup-chardev.c: In function ‘get_debugfs’:
gpio-mockup-chardev.c:62:3: warning: ignoring return value of ‘asprintf’, declared with attribute warn_unused_result [-Wunused-result]
asprintf(path, "%s/gpio", mnt_fs_get_target(fs));
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Handle asprintf() failures to fix this.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Shuah Khan <shuah@kernel.org>
Diffstat (limited to 'tools/testing/selftests/gpio/gpio-mockup-chardev.c')
| -rw-r--r-- | tools/testing/selftests/gpio/gpio-mockup-chardev.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/tools/testing/selftests/gpio/gpio-mockup-chardev.c b/tools/testing/selftests/gpio/gpio-mockup-chardev.c index f8d468f54e98..aaa1e9f083c3 100644 --- a/tools/testing/selftests/gpio/gpio-mockup-chardev.c +++ b/tools/testing/selftests/gpio/gpio-mockup-chardev.c @@ -37,7 +37,7 @@ static int get_debugfs(char **path) struct libmnt_table *tb; struct libmnt_iter *itr = NULL; struct libmnt_fs *fs; - int found = 0; + int found = 0, ret; cxt = mnt_new_context(); if (!cxt) @@ -58,8 +58,11 @@ static int get_debugfs(char **path) break; } } - if (found) - asprintf(path, "%s/gpio", mnt_fs_get_target(fs)); + if (found) { + ret = asprintf(path, "%s/gpio", mnt_fs_get_target(fs)); + if (ret < 0) + err(EXIT_FAILURE, "failed to format string"); + } mnt_free_iter(itr); mnt_free_context(cxt); |