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

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

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>

authored by

Peter Ujfalusi and committed by

Tomi Valkeinen 8 years ago b8c456d3 d312fe2e

1 changed file

expand all

drivers

gpu

drm

omapdrm

omap_dmm_tiler.c

drivers/gpu/drm/omapdrm/omap_dmm_tiler.c

··· 166 166 dmm_write(dmm, status, DMM_PAT_IRQSTATUS); 167 167 168 168 for (i = 0; i < dmm->num_engines; i++) { 169 + if (status & DMM_IRQSTAT_ERR_MASK) 170 + dev_err(dmm->dev, 171 + "irq error(engine%d): IRQSTAT 0x%02x\n", 172 + i, status & 0xff); 173 + 169 174 if (status & DMM_IRQSTAT_LST) { 170 175 if (dmm->engines[i].async) 171 176 release_engine(&dmm->engines[i]);