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| author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2012-04-16 19:16:54 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-06-01 15:18:26 +0800 |
| commit | 11c8c735ebf68c754bdd94cebd307a96fcd95068 (patch) | |
| tree | 876678d7678658773f87ab0969b213d23ff4f98a /include/linux/mmc | |
| parent | e6b2a258ab83555e062cd2bc2a0ade31b8c118d1 (diff) | |
| download | linux-3.10-11c8c735ebf68c754bdd94cebd307a96fcd95068.tar.gz linux-3.10-11c8c735ebf68c754bdd94cebd307a96fcd95068.tar.bz2 linux-3.10-11c8c735ebf68c754bdd94cebd307a96fcd95068.zip | |
mmc: sdio: avoid spurious calls to interrupt handlers
commit bbbc4c4d8c5face097d695f9bf3a39647ba6b7e7 upstream.
Commit 06e8935feb ("optimized SDIO IRQ handling for single irq")
introduced some spurious calls to SDIO function interrupt handlers,
such as when the SDIO IRQ thread is started, or the safety check
performed upon a system resume. Let's add a flag to perform the
optimization only when a real interrupt is signaled by the host
driver and we know there is no point confirming it.
Reported-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/mmc')
| -rw-r--r-- | include/linux/mmc/host.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index cbde4b7e675..0707d228d7f 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -297,6 +297,7 @@ struct mmc_host { unsigned int sdio_irqs; struct task_struct *sdio_irq_thread; + bool sdio_irq_pending; atomic_t sdio_irq_thread_abort; mmc_pm_flag_t pm_flags; /* requested pm features */ @@ -352,6 +353,7 @@ extern int mmc_cache_ctrl(struct mmc_host *, u8); static inline void mmc_signal_sdio_irq(struct mmc_host *host) { host->ops->enable_sdio_irq(host, 0); + host->sdio_irq_pending = true; wake_up_process(host->sdio_irq_thread); } |