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| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2017-09-29 14:49:47 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2017-12-01 15:03:58 +0200 |
| commit | 1c092fd5a20b58f48d954f8bc9e1b662e9448bed (patch) | |
| tree | 8b7d81d23080f2edb04334deed51a3dbabc07d84 | |
| parent | 82155738b733c64d06767c45c828bfd6caeafa68 (diff) | |
| download | linux-1c092fd5a20b58f48d954f8bc9e1b662e9448bed.tar.gz | |
drm/omap: DMM: In case of error/timeout in wait_status() print the reason
If the wait_status() fails either because of an error reported in the
STATUS register or because of a timeout waiting for the wait_mask, print
information which might help diagnose the reason.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| -rw-r--r-- | drivers/gpu/drm/omapdrm/omap_dmm_tiler.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c index 1dd3dafc59afd..5a18f0ead4d50 100644 --- a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c +++ b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c @@ -121,14 +121,22 @@ static int wait_status(struct refill_engine *engine, uint32_t wait_mask) while (true) { r = dmm_read(dmm, reg[PAT_STATUS][engine->id]); err = r & DMM_PATSTATUS_ERR; - if (err) + if (err) { + dev_err(dmm->dev, + "%s: error (engine%d). PAT_STATUS: 0x%08x\n", + __func__, engine->id, r); return -EFAULT; + } if ((r & wait_mask) == wait_mask) break; - if (--i == 0) + if (--i == 0) { + dev_err(dmm->dev, + "%s: timeout (engine%d). PAT_STATUS: 0x%08x\n", + __func__, engine->id, r); return -ETIMEDOUT; + } udelay(1); } |