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drm/omap: DMM: Print information if we received an error interrupt

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To help diagnose DMM errors, print out information if any of the error bits
are set in the interrupt status register.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Peter Ujfalusi 2017-09-29 14:49:48 +03:00 committed by Tomi Valkeinen
parent d312fe2ef5
commit b8c456d31b
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/omapdrm/omap_dmm_tiler.c
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@ -166,6 +166,11 @@ static irqreturn_t omap_dmm_irq_handler(int irq, void *arg)
dmm_write(dmm, status, DMM_PAT_IRQSTATUS);
for (i = 0; i < dmm->num_engines; i++) {
if (status & DMM_IRQSTAT_ERR_MASK)
dev_err(dmm->dev,
"irq error(engine%d): IRQSTAT 0x%02x\n",
i, status & 0xff);
if (status & DMM_IRQSTAT_LST) {
if (dmm->engines[i].async)
release_engine(&dmm->engines[i]);