Thread (6 messages) 6 messages, 3 authors, 2017-05-22

[PATCH] mmc: sdhci-iproc: suppress spurious interrupt with Multiblock read

From: Ulf Hansson <hidden>
Date: 2017-05-22 16:20:37
Also in: linux-mmc, lkml

On 22 May 2017 at 15:33, Srinath Mannam [off-list ref] wrote:
On Mon, May 22, 2017 at 5:31 PM, Ulf Hansson [off-list ref] wrote:
quoted
On 22 May 2017 at 13:52, Srinath Mannam [off-list ref] wrote:
quoted
On Fri, May 19, 2017 at 11:55 AM, Adrian Hunter [off-list ref] wrote:
quoted
On 18/05/17 19:57, Srinath Mannam wrote:
quoted
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 <redacted>
Reviewed-by: Ray Jui <redacted>
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Thanks Adrian...

Will it be possible to take this for Linux-4.12??
It's queued for 4.13, however are you saying it's a regression for
4.12? Then what commit fixes it?

Perhaps you even want this to go stable?

Kind regards
Uffe
Yes, this is regression for 4.12.
Fixes: b580c52d58d9 ("mmc: sdhci-iproc: add IPROC SDHCI driver")
Yes we want this to go in stable.
Alright, applied for fixes and added a stable tag.

Kind regards
Uffe
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