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| author | Anders Roxell <anders.roxell@linaro.org> | 2021-10-07 21:13:37 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-10-21 12:45:18 +0200 |
| commit | 01de5fcd8b1ac0ca28d2bb0921226a54fdd62684 (patch) | |
| tree | f7a3f13fd73413a9dfa9c61f89c790ad51bb165b | |
| parent | c1bfc598181bf04b371131df9ea77162079d710e (diff) | |
| download | linux-01de5fcd8b1ac0ca28d2bb0921226a54fdd62684.tar.bz2 | |
PM: hibernate: fix sparse warnings
When building the kernel with sparse enabled 'C=1' the following
warnings shows up:
kernel/power/swap.c:390:29: warning: incorrect type in assignment (different base types)
kernel/power/swap.c:390:29: expected int ret
kernel/power/swap.c:390:29: got restricted blk_status_t
This is due to function hib_wait_io() returns a 'blk_status_t' which is
a bitwise u8. Commit 5416da01ff6e ("PM: hibernate: Remove
blk_status_to_errno in hib_wait_io") seemed to have mixed up the return
type. However, the 4e4cbee93d56 ("block: switch bios to blk_status_t")
actually broke the behaviour by returning the wrong type.
Rework so function hib_wait_io() returns a 'int' instead of
'blk_status_t' and make sure to call function
blk_status_to_errno(hb->error)' when returning from function
hib_wait_io() a int gets returned.
Fixes: 4e4cbee93d56 ("block: switch bios to blk_status_t")
Fixes: 5416da01ff6e ("PM: hibernate: Remove blk_status_to_errno in hib_wait_io")
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | kernel/power/swap.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/power/swap.c b/kernel/power/swap.c index 9ec418955556..47107f9cd14c 100644 --- a/kernel/power/swap.c +++ b/kernel/power/swap.c @@ -299,14 +299,14 @@ static int hib_submit_io(int op, int op_flags, pgoff_t page_off, void *addr, return error; } -static blk_status_t hib_wait_io(struct hib_bio_batch *hb) +static int hib_wait_io(struct hib_bio_batch *hb) { /* * We are relying on the behavior of blk_plug that a thread with * a plug will flush the plug list before sleeping. */ wait_event(hb->wait, atomic_read(&hb->count) == 0); - return hb->error; + return blk_status_to_errno(hb->error); } /* |