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dmaengine: ioat: remove unnesesery double complition timer modification.

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removing unnecessary mod_timer from timeout handler
incase of ioat_cleanup_preamble() is true  for cleaner code

Acked-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Leonid Ravich <Leonid.Ravich@emc.com>
Link: https://lore.kernel.org/r/1587589761-32690-2-git-send-email-leonid.ravich@dell.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Leonid Ravich 2020-04-23 00:09:17 +03:00 committed by Vinod Koul
parent 5a87c506ed
commit 2baedcb6a6
1 changed files with 16 additions and 9 deletions
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25
drivers/dma/ioat/dma.c
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@ -922,17 +922,23 @@ void ioat_timer_event(struct timer_list *t)
spin_lock_bh(&ioat_chan->prep_lock);
check_active(ioat_chan);
spin_unlock_bh(&ioat_chan->prep_lock);
spin_unlock_bh(&ioat_chan->cleanup_lock);
return;
goto unlock_out;
}
/* handle the missed cleanup case */
if (ioat_cleanup_preamble(ioat_chan, &phys_complete)) {
/* timer restarted in ioat_cleanup_preamble
* and IOAT_COMPLETION_ACK cleared
*/
__cleanup(ioat_chan, phys_complete);
goto unlock_out;
}
/* if we haven't made progress and we have already
* acknowledged a pending completion once, then be more
* forceful with a restart
*/
if (ioat_cleanup_preamble(ioat_chan, &phys_complete))
__cleanup(ioat_chan, phys_complete);
else if (test_bit(IOAT_COMPLETION_ACK, &ioat_chan->state)) {
if (test_bit(IOAT_COMPLETION_ACK, &ioat_chan->state)) {
u32 chanerr;
chanerr = readl(ioat_chan->reg_base + IOAT_CHANERR_OFFSET);
@ -945,12 +951,13 @@ void ioat_timer_event(struct timer_list *t)
ioat_ring_active(ioat_chan));
ioat_reboot_chan(ioat_chan);
spin_unlock_bh(&ioat_chan->cleanup_lock);
return;
} else
set_bit(IOAT_COMPLETION_ACK, &ioat_chan->state);
goto unlock_out;
}
set_bit(IOAT_COMPLETION_ACK, &ioat_chan->state);
mod_timer(&ioat_chan->timer, jiffies + COMPLETION_TIMEOUT);
unlock_out:
spin_unlock_bh(&ioat_chan->cleanup_lock);
}