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| author | Tomi Valkeinen <tomi.valkeinen@nokia.com> | 2010-04-09 13:20:57 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@nokia.com> | 2010-08-03 15:18:47 +0300 |
| commit | b63ac1e31422077bed8257a519c6668f8868ed2b (patch) | |
| tree | b61b3fb7f248da4bce2a105f4dc76a3760d189ca /drivers/video/omap2 | |
| parent | 0c244f770f7fdb3e6779b3433aac9cfb6deb3255 (diff) | |
| download | op-kernel-dev-b63ac1e31422077bed8257a519c6668f8868ed2b.zip op-kernel-dev-b63ac1e31422077bed8257a519c6668f8868ed2b.tar.gz | |
OMAP: DSS2: DSI: handle error in synchronous write
Check if the peripheral answered something, and if so, dump the data
and return an error.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
Diffstat (limited to 'drivers/video/omap2')
| -rw-r--r-- | drivers/video/omap2/dss/dsi.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 767f6fb..5b62176 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -2089,6 +2089,13 @@ int dsi_vc_dcs_write(int channel, u8 *data, int len) if (r) goto err; + if (REG_GET(DSI_VC_CTRL(channel), 20, 20)) { /* RX_FIFO_NOT_EMPTY */ + DSSERR("rx fifo not empty after write, dumping data:\n"); + dsi_vc_flush_receive_data(channel); + r = -EIO; + goto err; + } + return 0; err: DSSERR("dsi_vc_dcs_write(ch %d, cmd 0x%02x, len %d) failed\n", |
