Hi,
The data type of "host" is "struct mmc_host", and there is not "quirks" member in this structure.
Thanks,
Zhonghui
On 2014/7/14 21:26, Chris Ball wrote:
> Hi Zhonghui,
>
> On Tue, Jul 08 2014, Fu, Zhonghui wrote:
>> Why add "mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD;" ? How to fix this bug?
>>
>> Could you please give out some idea about this bug?
> Jaehoon already gave you a patch to fix this bug. Here it is again in
> proper patch form. Please can you test it and let us know whether it
> fixes the crash? Thanks.
>
>
> From: Chris Ball <chris@xxxxxxxxxx>
> Subject: [PATCH] mmc: core: sdio: Fix unconditional wake_up_process() on sdio thread
>
> 781e989cf59 ("mmc: sdhci: convert to new SDIO IRQ handling") and
> bf3b5ec66bd ("mmc: sdio_irq: rework sdio irq handling") disabled
> the use of our own custom threaded IRQ handler, but left in an
> unconditional wake_up_process() on that handler at resume-time.
>
> Reported-by: Fu, Zhonghui <zhonghui.fu@xxxxxxxxxxxxxxx>
> [Patch suggested by Jaehoon Chung]
> Signed-off-by: Chris Ball <chris@xxxxxxxxxx>
> ---
> drivers/mmc/core/sdio.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
> index e636d9e..2a128e2 100644
> --- a/drivers/mmc/core/sdio.c
> +++ b/drivers/mmc/core/sdio.c
> @@ -992,7 +992,8 @@ static int mmc_sdio_resume(struct mmc_host *host)
> }
> }
>
> - if (!err && host->sdio_irqs)
> + if (!err && host->sdio_irqs &&
> + !(host->quirks & MMC_CAP2_SDIO_IRQ_NOTHREAD))
> wake_up_process(host->sdio_irq_thread);
> mmc_release_host(host);
>
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