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authorHarald Welte <laforge@openmoko.org>2008-06-30 22:40:25 +0100
committerPierre Ossman <drzeus@drzeus.cx>2008-07-15 14:14:46 +0200
commit679f0f8abd7187baaff40a47fe4733ae4c24cc9a (patch)
tree23e88d30350c7babd10424c668047c37406b0e0a /drivers/mmc/host/s3cmci.c
parentbe518018c6b9224c02284fb243207ef741c31ec6 (diff)
downloadop-kernel-dev-679f0f8abd7187baaff40a47fe4733ae4c24cc9a.zip
op-kernel-dev-679f0f8abd7187baaff40a47fe4733ae4c24cc9a.tar.gz
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>
Diffstat (limited to 'drivers/mmc/host/s3cmci.c')
-rw-r--r--drivers/mmc/host/s3cmci.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
index c6a4d3c..4db5bd7 100644
--- a/drivers/mmc/host/s3cmci.c
+++ b/drivers/mmc/host/s3cmci.c
@@ -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;
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