The retval variable is assigned by bitops only and thus there is no reason to use a signed type. Further matching it with the return type of the function also makes static code checkers happy.
Signed-off-by: Nicholas Mc Guire <der.h...@hofr.at> --- Found by experimental type-checking coccinelle script Patch was compile tested with: x86_64_defconfig Patch is against 4.10-rc6 (localversion-next is next-20170209) ipc/mqueue.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/ipc/mqueue.c b/ipc/mqueue.c index 4fdd970..897ce70 100644 --- a/ipc/mqueue.c +++ b/ipc/mqueue.c @@ -519,7 +519,7 @@ static int mqueue_flush_file(struct file *filp, fl_owner_t id) static unsigned int mqueue_poll_file(struct file *filp, struct poll_table_struct *poll_tab) { struct mqueue_inode_info *info = MQUEUE_I(file_inode(filp)); - int retval = 0; + unsigned int retval = 0; poll_wait(filp, &info->wait_q, poll_tab); -- 2.1.4