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| author | Jerry Snitselaar <jsnitsel@redhat.com> | 2022-09-28 08:48:56 -0700 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2022-09-29 13:02:38 +0530 |
| commit | de5819b994893197c71c86d21af10f85f50d6499 (patch) | |
| tree | e6389ac7a5b01c38f82455e92f2cd28e503b02b3 /drivers/dma/idxd/irq.c | |
| parent | 8e527aac055557897d43a3d74d7970ef5cf6a8bb (diff) | |
| download | lwn-de5819b994893197c71c86d21af10f85f50d6499.tar.gz lwn-de5819b994893197c71c86d21af10f85f50d6499.zip | |
dmaengine: idxd: track enabled workqueues in bitmap
Now that idxd_wq_disable_cleanup() sets the workqueue state to
IDXD_WQ_DISABLED, use a bitmap to track which workqueues have been
enabled. This will then be used to determine which workqueues
should be re-enabled when attempting a software reset to recover
from a device halt state.
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20220928154856.623545-3-jsnitsel@redhat.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/idxd/irq.c')
| -rw-r--r-- | drivers/dma/idxd/irq.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/dma/idxd/irq.c b/drivers/dma/idxd/irq.c index 5b9921475be6..5927d371493c 100644 --- a/drivers/dma/idxd/irq.c +++ b/drivers/dma/idxd/irq.c @@ -49,11 +49,12 @@ static void idxd_device_reinit(struct work_struct *work) goto out; for (i = 0; i < idxd->max_wqs; i++) { - struct idxd_wq *wq = idxd->wqs[i]; + if (test_bit(i, idxd->wq_enable_map)) { + struct idxd_wq *wq = idxd->wqs[i]; - if (wq->state == IDXD_WQ_ENABLED) { rc = idxd_wq_enable(wq); if (rc < 0) { + clear_bit(i, idxd->wq_enable_map); dev_warn(dev, "Unable to re-enable wq %s\n", dev_name(wq_confdev(wq))); } |