This is a note to let you know that I've just added the patch titled
mmc: sdhci-iproc: suppress spurious interrupt with Multiblock read
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mmc-sdhci-iproc-suppress-spurious-interrupt-with-multiblock-read.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f5f968f2371ccdebb8a365487649673c9af68d09 Mon Sep 17 00:00:00 2001
From: Srinath Mannam <srinath.mannam@xxxxxxxxxxxx>
Date: Thu, 18 May 2017 22:27:40 +0530
Subject: mmc: sdhci-iproc: suppress spurious interrupt with Multiblock read
From: Srinath Mannam <srinath.mannam@xxxxxxxxxxxx>
commit f5f968f2371ccdebb8a365487649673c9af68d09 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@xxxxxxxxxxxx>
Reviewed-by: Ray Jui <ray.jui@xxxxxxxxxxxx>
Reviewed-by: Scott Branden <scott.branden@xxxxxxxxxxxx>
Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Fixes: b580c52d58d9 ("mmc: sdhci-iproc: add IPROC SDHCI driver")
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci-iproc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/mmc/host/sdhci-iproc.c
+++ b/drivers/mmc/host/sdhci-iproc.c
@@ -157,7 +157,8 @@ static const struct sdhci_ops sdhci_ipro
};
static const struct sdhci_pltfm_data sdhci_iproc_pltfm_data = {
- .quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK,
+ .quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
+ SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12,
.quirks2 = SDHCI_QUIRK2_ACMD23_BROKEN,
.ops = &sdhci_iproc_ops,
};
Patches currently in stable-queue which might be from srinath.mannam@xxxxxxxxxxxx are
queue-4.9/mmc-sdhci-iproc-suppress-spurious-interrupt-with-multiblock-read.patch