mmc: sdio: avoid spurious calls to interrupt handlers
commit0d7755e450865b76b98e3fea2e166b0a2266972d
authorNicolas Pitre <nicolas.pitre@linaro.org>
Mon, 16 Apr 2012 23:16:54 +0000 (16 19:16 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 1 Jun 2012 07:13:00 +0000 (1 15:13 +0800)
treef8cd534b07f01aaf1e990ab3ca336c1f75adb46c
parent1c4f53ca32463a742583976f40444ce4485f3cf9
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>
drivers/mmc/core/sdio.c
drivers/mmc/core/sdio_irq.c
include/linux/mmc/host.h