On 29 April 2014 13:07, Ulf Hansson <[email protected]> wrote:
> On 29 April 2014 10:32, Alex Smith <[email protected]> wrote:
>> 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 <[email protected]>
>> Cc: Lars-Peter Clausen <[email protected]>
>> Cc: Ulf Hansson <[email protected]>
>> Cc: Chris Ball <[email protected]>
>> Cc: James Hogan <[email protected]>
>
> Acked-by: Ulf Hansson <[email protected]>
Alex, could you please resend a new version which has been verified
using checkpatch.
Kind regards
Ulf Hansson
>
>> ---
>> drivers/mmc/host/jz4740_mmc.c | 10 ++++++----
>> 1 file changed, 6 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/mmc/host/jz4740_mmc.c b/drivers/mmc/host/jz4740_mmc.c
>> index de2139c..1c3368b 100644
>> --- a/drivers/mmc/host/jz4740_mmc.c
>> +++ b/drivers/mmc/host/jz4740_mmc.c
>> @@ -515,10 +515,12 @@ 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;
>> --
>> 1.9.2
>>
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