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authorColin Ian King <colin.king@canonical.com>2018-01-30 18:11:44 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2018-02-08 15:56:11 +0300
commitdedab7f0d3137441a97fe7cf9b9ca5dbd20ca9a5 (patch)
tree54e976a81e05f1231af1d3b4ff33dd8340acf0e9 /drivers/misc
parent6cc3f91bf69fc8c1719704607474f9b9df56f348 (diff)
downloadlinux-dedab7f0d3137441a97fe7cf9b9ca5dbd20ca9a5.tar.xz
ocxl: fix signed comparison with less than zero
Currently the comparison of used < 0 is always false because uses is a size_t. Fix this by making used a ssize_t type. Detected by Coccinelle: drivers/misc/ocxl/file.c:320:6-10: WARNING: Unsigned expression compared with zero: used < 0 Fixes: 5ef3166e8a32 ("ocxl: Driver code for 'generic' opencapi devices") Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Acked-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/ocxl/file.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/misc/ocxl/file.c b/drivers/misc/ocxl/file.c
index c90c1a578d2f..1287e4430e6b 100644
--- a/drivers/misc/ocxl/file.c
+++ b/drivers/misc/ocxl/file.c
@@ -277,7 +277,7 @@ static ssize_t afu_read(struct file *file, char __user *buf, size_t count,
struct ocxl_context *ctx = file->private_data;
struct ocxl_kernel_event_header header;
ssize_t rc;
- size_t used = 0;
+ ssize_t used = 0;
DEFINE_WAIT(event_wait);
memset(&header, 0, sizeof(header));