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mmc: mmci: Remove redundant check of status for DATA irq

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We don't need to verify the content of the status register twice, while
we are about to handle a DATA irq. Instead let's leave all verification
to be handled by mmci_data_irq().

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Tested-by: Kees Cook <keescook@chromium.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Ulf Hansson 2014-06-12 14:42:23 +02:00
parent 3a33a94ce2
commit 1cb9da5028
1 changed files with 5 additions and 6 deletions
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11
drivers/mmc/host/mmci.c
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@ -888,6 +888,10 @@ static void
mmci_data_irq(struct mmci_host *host, struct mmc_data *data,
unsigned int status)
{
/* Make sure we have data to handle */
if (!data)
return;
/* First check for errors */
if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_STARTBITERR|
MCI_TXUNDERRUN|MCI_RXOVERRUN)) {
@ -1206,7 +1210,6 @@ static irqreturn_t mmci_irq(int irq, void *dev_id)
do {
struct mmc_command *cmd;
struct mmc_data *data;
status = readl(host->base + MMCISTATUS);
@ -1232,11 +1235,7 @@ static irqreturn_t mmci_irq(int irq, void *dev_id)
MCI_CMDSENT|MCI_CMDRESPEND) && cmd)
mmci_cmd_irq(host, cmd, status);
data = host->data;
if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_STARTBITERR|
MCI_TXUNDERRUN|MCI_RXOVERRUN|MCI_DATAEND|
MCI_DATABLOCKEND) && data)
mmci_data_irq(host, data, status);
mmci_data_irq(host, host->data, status);
/* Don't poll for busy completion in irq context. */
if (host->busy_status)