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| author |   Stephen Cameron <stephenmcameron@gmail.com> | 2015-01-23 16:44:01 -0600 |
|---|---|---|
| committer |   James Bottomley <JBottomley@Parallels.com> | 2015-02-02 09:57:42 -0800 |
| commit | 6f99a9160f1947569bc17b85fbe7353a1090dfe7 (patch) | |
| tree | 37b0c2e6cbd9f5f715ee9fffbe57697dbe6f3df6 /drivers/scsi/hpsa.c | |
| parent | hpsa: do not check for msi(x) in interrupt_pending (diff) | |
| download | linux-dev-6f99a9160f1947569bc17b85fbe7353a1090dfe7.tar.xz linux-dev-6f99a9160f1947569bc17b85fbe7353a1090dfe7.zip | |
hpsa: remove incorrect BUG_ONs checking for raid offload enable
In set_encrypt_ioaccel2() and in hpsa_scsi_ioaccel_raid_map
there were BUG_ONs that looked like this:
BUG_ON(!(dev->offload_config && dev->offload_enabled));
But, In hpsa_ack_ctlr_events() we have this,
/* Stop sending new RAID offload reqs via the IO accelerator */
scsi_block_requests(h->scsi_host);
for (i = 0; i < h->ndevices; i++)
h->dev[i]->offload_enabled = 0;
hpsa_drain_accel_commands(h);
So, we set offload_enabled = 0 for all drives, then do this
drain_accel_commands, so that means accel commands could still
be in flight, ie. perhaps having just been submitted into
hpsa_scsi_ioaccel_raid_map concurrent with ->offload_enabled
having just been set to zero.
Reviewed-by: Scott Teel <scott.teel@pmcs.com>
Signed-off-by: Don Brace <don.brace@pmcs.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/hpsa.c')
| -rw-r--r-- | drivers/scsi/hpsa.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index bae3759e30e2..5abd49d85940 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -3456,8 +3456,6 @@ static void set_encrypt_ioaccel2(struct ctlr_info *h, struct raid_map_data *map = &dev->raid_map; u64 first_block; - BUG_ON(!(dev->offload_config && dev->offload_enabled)); - /* Are we doing encryption on this device */ if (!(le16_to_cpu(map->flags) & RAID_MAP_FLAG_ENCRYPT_ON)) return; @@ -3688,8 +3686,6 @@ static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h, #endif int offload_to_mirror; - BUG_ON(!(dev->offload_config && dev->offload_enabled)); - /* check for valid opcode, get LBA and block count */ switch (cmd->cmnd[0]) { case WRITE_6: |