nbd: Fix signal handling

Both nbd_send_cmd() and nbd_handle_cmd() return either a negative error
number or a positive blk_status_t value. nbd_queue_rq() converts these
return values into a blk_status_t value. There is a bug in the conversion
code: if nbd_send_cmd() returns BLK_STS_RESOURCE, nbd_queue_rq() should
return BLK_STS_RESOURCE instead of BLK_STS_OK. Fix this, move the
conversion code into nbd_handle_cmd() and fix the remaining sparse warnings.

This patch fixes the following sparse warnings:

drivers/block/nbd.c:673:32: warning: incorrect type in return expression (different base types)
drivers/block/nbd.c:673:32:    expected int
drivers/block/nbd.c:673:32:    got restricted blk_status_t [usertype]
drivers/block/nbd.c:714:48: warning: incorrect type in return expression (different base types)
drivers/block/nbd.c:714:48:    expected int
drivers/block/nbd.c:714:48:    got restricted blk_status_t [usertype]
drivers/block/nbd.c:1120:21: warning: incorrect type in assignment (different base types)
drivers/block/nbd.c:1120:21:    expected int [assigned] ret
drivers/block/nbd.c:1120:21:    got restricted blk_status_t [usertype]
drivers/block/nbd.c:1125:16: warning: incorrect type in return expression (different base types)
drivers/block/nbd.c:1125:16:    expected restricted blk_status_t
drivers/block/nbd.c:1125:16:    got int [assigned] ret

Cc: Christoph Hellwig <[email protected]>
Cc: Josef Bacik <[email protected]>
Cc: Yu Kuai <[email protected]>
Cc: Markus Pargmann <[email protected]>
Fixes: fc17b6534eb8 ("blk-mq: switch ->queue_rq return value to blk_status_t")
Cc: [email protected]
Signed-off-by: Bart Van Assche <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>

0 files changed, 0 insertions, 0 deletions