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mmc: jz4740: don't wait for PRG_DONE after stop command with R1 response

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As of commit bcc3e1726d ("mmc: block: Use R1 responses for stop cmds for
read requests"), stop commands for reads do not have MMC_RSP_BUSY set.
In this case we should not wait for a PRG_DONE IRQ after sending the
stop command: it will not get raised when the busy flag is not set,
causing the request to fail with a timeout.

Signed-off-by: Alex Smith <alex.smith@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Chris Ball <chris@printf.net>
Cc: James Hogan <james.hogan@imgtec.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
This commit is contained in:
Alex Smith 2014-04-29 13:54:54 +01:00 committed by Chris Ball
parent c373eb489b
commit 1acee84b6f
1 changed files with 7 additions and 4 deletions
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11
drivers/mmc/host/jz4740_mmc.c
View file

@ -515,10 +515,13 @@ static irqreturn_t jz_mmc_irq_worker(int irq, void *devid)
jz4740_mmc_send_command(host, req->stop);
timeout = jz4740_mmc_poll_irq(host, JZ_MMC_IRQ_PRG_DONE);
if (timeout) {
host->state = JZ4740_MMC_STATE_DONE;
break;
if (mmc_resp_type(req->stop) & MMC_RSP_BUSY) {
timeout = jz4740_mmc_poll_irq(host,
JZ_MMC_IRQ_PRG_DONE);
if (timeout) {
host->state = JZ4740_MMC_STATE_DONE;
break;
}
}
case JZ4740_MMC_STATE_DONE:
break;