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skd: Document locking assumptions 

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bart Van Assche 2017-08-17 13:13:00 -07:00 committed by Jens Axboe
parent 4854afe32f
commit 760b48ca93
1 changed files with 8 additions and 0 deletions
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8
drivers/block/skd_main.c
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@ -1894,6 +1894,8 @@ static void skd_complete_internal(struct skd_device *skdev,
struct skd_scsi_request *scsi =
(struct skd_scsi_request *)&skspcl->msg_buf[64];
lockdep_assert_held(&skdev->lock);
SKD_ASSERT(skspcl == &skdev->internal_skspcl);
dev_dbg(&skdev->pdev->dev, "complete internal %x\n", scsi->cdb[0]);
@ -2564,6 +2566,8 @@ static int skd_isr_completion_posted(struct skd_device *skdev,
int rc = 0;
int processed = 0;
lockdep_assert_held(&skdev->lock);
for (;; ) {
SKD_ASSERT(skdev->skcomp_ix < SKD_N_COMPLETION_ENTRY);
@ -2701,6 +2705,8 @@ static void skd_complete_other(struct skd_device *skdev,
u32 req_slot;
struct skd_special_context *skspcl;
lockdep_assert_held(&skdev->lock);
req_id = skcomp->tag;
req_table = req_id & SKD_ID_TABLE_MASK;
req_slot = req_id & SKD_ID_SLOT_MASK;
@ -2774,6 +2780,8 @@ static void skd_complete_special(struct skd_device *skdev,
volatile struct fit_comp_error_info *skerr,
struct skd_special_context *skspcl)
{
lockdep_assert_held(&skdev->lock);
dev_dbg(&skdev->pdev->dev, " completing special request %p\n", skspcl);
if (skspcl->orphaned) {
/* Discard orphaned request */