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| author | Finn Thain <fthain@telegraphics.com.au> | 2020-11-20 05:39:56 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-11-24 04:13:55 +0100 |
| commit | bdd1cc0377d3ce96683d178f30714da478f6a955 (patch) | |
| tree | d2c13d96321e33a9a6bc33356cff95db5a967bcc /drivers | |
| parent | scsi: atari_scsi: Fix race condition between .queuecommand and EH (diff) | |
| download | linux-bdd1cc0377d3ce96683d178f30714da478f6a955.tar.xz linux-bdd1cc0377d3ce96683d178f30714da478f6a955.zip | |
scsi: NCR5380: Reduce NCR5380_maybe_release_dma_irq() call sites
Refactor to avoid needless calls to NCR5380_maybe_release_dma_irq().
This makes the machine code smaller and the source more readable.
Link: https://lore.kernel.org/r/c1317ae8fdcb498460de5d7ea0bd62a42f5eeca8.1605847196.git.fthain@telegraphics.com.au
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
Reviewed-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/NCR5380.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c index ea4b5749e7da..d597d7493a62 100644 --- a/drivers/scsi/NCR5380.c +++ b/drivers/scsi/NCR5380.c @@ -725,7 +725,6 @@ static void NCR5380_main(struct work_struct *work) if (!NCR5380_select(instance, cmd)) { dsprintk(NDEBUG_MAIN, instance, "main: select complete\n"); - maybe_release_dma_irq(instance); } else { dsprintk(NDEBUG_MAIN | NDEBUG_QUEUES, instance, "main: select failed, returning %p to queue\n", cmd); @@ -737,8 +736,10 @@ static void NCR5380_main(struct work_struct *work) NCR5380_information_transfer(instance); done = 0; } - if (!hostdata->connected) + if (!hostdata->connected) { NCR5380_write(SELECT_ENABLE_REG, hostdata->id_mask); + maybe_release_dma_irq(instance); + } spin_unlock_irq(&hostdata->lock); if (!done) cond_resched(); @@ -1844,7 +1845,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) */ NCR5380_write(TARGET_COMMAND_REG, 0); - maybe_release_dma_irq(instance); return; case MESSAGE_REJECT: /* Accept message by clearing ACK */ @@ -1976,7 +1976,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) hostdata->busy[scmd_id(cmd)] &= ~(1 << cmd->device->lun); cmd->result = DID_ERROR << 16; complete_cmd(instance, cmd); - maybe_release_dma_irq(instance); return; } msgout = NOP; @@ -2312,7 +2311,6 @@ out: } queue_work(hostdata->work_q, &hostdata->main_task); - maybe_release_dma_irq(instance); spin_unlock_irqrestore(&hostdata->lock, flags); return result; @@ -2368,7 +2366,6 @@ static void bus_reset_cleanup(struct Scsi_Host *instance) hostdata->dma_len = 0; queue_work(hostdata->work_q, &hostdata->main_task); - maybe_release_dma_irq(instance); } /** |