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linux/drivers/mmc
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Srinath Mannam ecbf0f48d6 mmc: sdhci-iproc: suppress spurious interrupt with Multiblock read 
commit f5f968f237 upstream.

The stingray SDHCI hardware supports ACMD12 and automatically
issues after multi block transfer completed.

If ACMD12 in SDHCI is disabled, spurious tx done interrupts are seen
on multi block read command with below error message:

Got data interrupt 0x00000002 even though no data
operation was in progress.

This patch uses SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 to enable
ACM12 support in SDHCI hardware and suppress spurious interrupt.

Signed-off-by: Srinath Mannam <srinath.mannam@broadcom.com>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Fixes: b580c52d58 ("mmc: sdhci-iproc: add IPROC SDHCI driver")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2017-06-07 12:07:47 +02:00
..
card mmc: mmc_test: Uninitialized return value 2017-01-12 11:39:31 +01:00
core mmc: core: fix multi-bit bus width without high-speed mode 2017-02-23 17:44:35 +01:00
host mmc: sdhci-iproc: suppress spurious interrupt with Multiblock read 2017-06-07 12:07:47 +02:00
Kconfig mmc: explicitly mention SDIO support in Kconfig 2008-10-12 11:04:36 +02:00
Makefile mmc: sdhci-pci: add platform data 2012-01-11 23:58:47 -05:00