This is a note to let you know that I've just added the patch titled
mmc: atmel-mci: save and restore sdioirq when soft reset is performed
to the 3.2-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-atmel-mci-save-and-restore-sdioirq-when-soft-reset-is-performed.patch
and it can be found in the queue-3.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 18ee684b8ab666329e0a0a72d8b70f16fb0e2243 Mon Sep 17 00:00:00 2001
From: Ludovic Desroches <[email protected]>
Date: Thu, 9 Feb 2012 11:55:29 +0100
Subject: mmc: atmel-mci: save and restore sdioirq when soft reset is performed
From: Ludovic Desroches <[email protected]>
commit 18ee684b8ab666329e0a0a72d8b70f16fb0e2243 upstream.
Sometimes a software reset is needed. Then some registers are saved and
restored but the interrupt mask register is missing. It causes issues
with sdio devices whose interrupts are masked after reset.
Signed-off-by: Ludovic Desroches <[email protected]>
Signed-off-by: Nicolas Ferre <[email protected]>
Signed-off-by: Chris Ball <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/mmc/host/atmel-mci.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -965,11 +965,14 @@ static void atmci_start_request(struct a
host->data_status = 0;
if (host->need_reset) {
+ iflags = atmci_readl(host, ATMCI_IMR);
+ iflags &= (ATMCI_SDIOIRQA | ATMCI_SDIOIRQB);
atmci_writel(host, ATMCI_CR, ATMCI_CR_SWRST);
atmci_writel(host, ATMCI_CR, ATMCI_CR_MCIEN);
atmci_writel(host, ATMCI_MR, host->mode_reg);
if (host->caps.has_cfg_reg)
atmci_writel(host, ATMCI_CFG, host->cfg_reg);
+ atmci_writel(host, ATMCI_IER, iflags);
host->need_reset = false;
}
atmci_writel(host, ATMCI_SDCR, slot->sdc_reg);
Patches currently in stable-queue which might be from
[email protected] are
queue-3.2/mmc-atmel-mci-save-and-restore-sdioirq-when-soft-reset-is-performed.patch
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