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MMC: S3C24XX MMC/SD driver write fixes 

This patch is a workaround of some S3C2410 MMC chip bug

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Harald Welte 2008-06-30 22:40:25 +01:00 committed by Pierre Ossman
parent be518018c6
commit 679f0f8abd
1 changed files with 13 additions and 3 deletions
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16
drivers/mmc/host/s3cmci.c
View File

@ -461,9 +461,19 @@ static irqreturn_t s3cmci_irq(int irq, void *dev_id)
if (mci_csta & S3C2410_SDICMDSTAT_CRCFAIL) {
if (cmd->flags & MMC_RSP_CRC) {
cmd->error = -EILSEQ;
host->status = "error: bad command crc";
goto fail_transfer;
if (host->mrq->cmd->flags & MMC_RSP_136) {
dbg(host, dbg_irq,
"fixup: ignore CRC fail with long rsp\n");
} else {
/* note, we used to fail the transfer
* here, but it seems that this is just
* the hardware getting it wrong.
*
* cmd->error = -EILSEQ;
* host->status = "error: bad command crc";
* goto fail_transfer;
*/
}
}
mci_cclear |= S3C2410_SDICMDSTAT_CRCFAIL;