diff options
| author |   Dave Jiang <dave.jiang@intel.com> | 2020-07-29 08:57:26 -0700 |
|---|---|---|
| committer |   Vinod Koul <vkoul@kernel.org> | 2020-08-17 10:49:11 +0530 |
| commit | 0ec083e50ca816953e65e3209c7199cd1a203ddc (patch) | |
| tree | 68edbfba5fded163f4563c254256957a57f954e6 /drivers/dma/idxd | |
| parent | dmaengine: ti: omap-dma: Drop of_match_ptr to fix -Wunused-const-variable (diff) | |
| download | linux-dev-0ec083e50ca816953e65e3209c7199cd1a203ddc.tar.xz linux-dev-0ec083e50ca816953e65e3209c7199cd1a203ddc.zip | |
dmaengine: idxd: clear misc interrupt cause after read
Move the clearing of misc interrupt cause to immediately after reading the
register in order to allow the next interrupt to be asserted.
Suggested-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/159603824665.28647.5344356370364397996.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/idxd')
| -rw-r--r-- | drivers/dma/idxd/irq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/idxd/irq.c b/drivers/dma/idxd/irq.c index b5142556cc4e..11ac0703b371 100644 --- a/drivers/dma/idxd/irq.c +++ b/drivers/dma/idxd/irq.c @@ -76,6 +76,7 @@ irqreturn_t idxd_misc_thread(int vec, void *data) bool err = false; cause = ioread32(idxd->reg_base + IDXD_INTCAUSE_OFFSET); + iowrite32(cause, idxd->reg_base + IDXD_INTCAUSE_OFFSET); if (cause & IDXD_INTC_ERR) { spin_lock_bh(&idxd->dev_lock); @@ -133,7 +134,6 @@ irqreturn_t idxd_misc_thread(int vec, void *data) dev_warn_once(dev, "Unexpected interrupt cause bits set: %#x\n", val); - iowrite32(cause, idxd->reg_base + IDXD_INTCAUSE_OFFSET); if (!err) goto out; |