From: Philipp Zabel Date: Mon, 8 Apr 2019 12:32:49 +0000 (-0400) Subject: media: coda: clear error return value before picture run X-Git-Tag: v5.2-rc1~127^2~35 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=bbeefa7357a648afe70e7183914c87c3878d528d;p=linux.git media: coda: clear error return value before picture run The error return value is not written by some firmware codecs, such as MPEG-2 decode on CodaHx4. Clear the error return value before starting the picture run to avoid misinterpreting unrelated values returned by sequence initialization as error return value. Signed-off-by: Philipp Zabel Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/platform/coda/coda-bit.c b/drivers/media/platform/coda/coda-bit.c index b4f396c2e72c..eaa86737fa04 100644 --- a/drivers/media/platform/coda/coda-bit.c +++ b/drivers/media/platform/coda/coda-bit.c @@ -2010,6 +2010,9 @@ static int coda_prepare_decode(struct coda_ctx *ctx) /* Clear decode success flag */ coda_write(dev, 0, CODA_RET_DEC_PIC_SUCCESS); + /* Clear error return value */ + coda_write(dev, 0, CODA_RET_DEC_PIC_ERR_MB); + trace_coda_dec_pic_run(ctx, meta); coda_command_async(ctx, CODA_COMMAND_PIC_RUN);