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| author | Linus Walleij <linus.walleij@linaro.org> | 2011-06-30 15:10:21 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-07-06 20:46:04 +0100 |
| commit | 757df746fc5db0020ddab45914617a19d149c252 (patch) | |
| tree | d6c4d703c89b774c653d4327ed53d4620fbd7d96 /drivers/mmc/host/mmci.c | |
| parent | 2eb5af44b1d22d7f7b715e0b9a4e516eb4451bf9 (diff) | |
| download | lwn-757df746fc5db0020ddab45914617a19d149c252.tar.gz lwn-757df746fc5db0020ddab45914617a19d149c252.zip | |
ARM: 6980/1: mmci: use StartBitErr to detect bad connections
Stresstesting insert/remove of SD-cards can trigger
a StartBitErr. This made the driver to hang in forever
waiting for a non ocurring data timeout.
This bit and interrupt is documented in the original
PL180 TRM, just never implemented until now.
Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Reviewed-by: Linus Walleij <linus.walleij@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/mmc/host/mmci.c')
| -rw-r--r-- | drivers/mmc/host/mmci.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index 7721de942c69..fe140724a02e 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -582,6 +582,8 @@ mmci_data_irq(struct mmci_host *host, struct mmc_data *data, data->error = -EILSEQ; } else if (status & MCI_DATATIMEOUT) { data->error = -ETIMEDOUT; + } else if (status & MCI_STARTBITERR) { + data->error = -ECOMM; } else if (status & MCI_TXUNDERRUN) { data->error = -EIO; } else if (status & MCI_RXOVERRUN) { |