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mmc: core: sdio: Fix unconditional wake_up_process() on sdio thread 

781e989cf5 ("mmc: sdhci: convert to new SDIO IRQ handling") and
bf3b5ec66b ("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.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=80151

In addition, the check for MMC_CAP_SDIO_IRQ capability is added
before enable sdio IRQ.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <chris@printf.net>
Signed-off-by: Fu Zhonghui <zhonghui.fu@linux.intel.com>
Cc: <stable@vger.kernel.org> # v3.16+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Fu Zhonghui 2014-08-18 10:48:14 +08:00 committed by Ulf Hansson
parent b1dec12032
commit dea67c4ec8
2 changed files with 12 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/mmc/core/sdio.c
View File

@ -992,8 +992,16 @@ static int mmc_sdio_resume(struct mmc_host *host)
}
}
if (!err && host->sdio_irqs)
wake_up_process(host->sdio_irq_thread);
if (!err && host->sdio_irqs) {
if (!(host->caps2 & MMC_CAP2_SDIO_IRQ_NOTHREAD)) {
wake_up_process(host->sdio_irq_thread);
} else if (host->caps & MMC_CAP_SDIO_IRQ) {
mmc_host_clk_hold(host);
host->ops->enable_sdio_irq(host, 1);
mmc_host_clk_release(host);
}
}
mmc_release_host(host);
host->pm_flags &= ~MMC_PM_KEEP_POWER;

4
drivers/mmc/core/sdio_irq.c
View File

@ -208,7 +208,7 @@ static int sdio_card_irq_get(struct mmc_card *card)
host->sdio_irqs--;
return err;
}
} else {
} else if (host->caps & MMC_CAP_SDIO_IRQ) {
mmc_host_clk_hold(host);
host->ops->enable_sdio_irq(host, 1);
mmc_host_clk_release(host);
@ -229,7 +229,7 @@ static int sdio_card_irq_put(struct mmc_card *card)
if (!(host->caps2 & MMC_CAP2_SDIO_IRQ_NOTHREAD)) {
atomic_set(&host->sdio_irq_thread_abort, 1);
kthread_stop(host->sdio_irq_thread);
} else {
} else if (host->caps & MMC_CAP_SDIO_IRQ) {
mmc_host_clk_hold(host);
host->ops->enable_sdio_irq(host, 0);
mmc_host_clk_release(host);