This makes the failure error message a little more useful.
Signed-off-by: Baruch Siach <baruch@xxxxxxxxxx>
---
contrib/test/v4l2grab.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/contrib/test/v4l2grab.c b/contrib/test/v4l2grab.c
index 3e1be3de6353..778c51cc391a 100644
--- a/contrib/test/v4l2grab.c
+++ b/contrib/test/v4l2grab.c
@@ -43,7 +43,8 @@ static void xioctl(int fh, unsigned long int request, void *arg)
} while (r == -1 && ((errno == EINTR) || (errno == EAGAIN)));
if (r == -1) {
- fprintf(stderr, "error %d, %s\n", errno, strerror(errno));
+ fprintf(stderr, "%s(%lu): error %d, %s\n", __func__,
+ _IOC_NR(request), errno, strerror(errno));
exit(EXIT_FAILURE);
}
}
--
2.5.0
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