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OMAP: DSS2: DSI: handle error in synchronous write

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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>
This commit is contained in:
Tomi Valkeinen 2010-04-09 13:20:57 +03:00
parent 0c244f770f
commit b63ac1e314
1 changed files with 7 additions and 0 deletions
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7
drivers/video/omap2/dss/dsi.c
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@ -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",