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ARM: 6980/1: mmci: use StartBitErr to detect bad connections

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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>
This commit is contained in:
Linus Walleij
2011-06-30 15:10:21 +01:00
committed by Russell King
parent 2eb5af44b1
commit 757df746fc
2 changed files with 6 additions and 1 deletions
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2
drivers/mmc/host/mmci.c
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@@ -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) {