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authorLudovic Desroches <ludovic.desroches@atmel.com>2012-02-09 11:55:29 +0100
committerChris Ball <cjb@laptop.org>2012-02-13 20:39:05 -0500
commit18ee684b8ab666329e0a0a72d8b70f16fb0e2243 (patch)
treef7d12e7061397d3b2c3747572f84cd19e504a75a /drivers/mmc/host/atmel-mci.c
parent00d9ac08757049f334803b3d4dd202a6b1687dab (diff)
downloadop-kernel-dev-18ee684b8ab666329e0a0a72d8b70f16fb0e2243.zip
op-kernel-dev-18ee684b8ab666329e0a0a72d8b70f16fb0e2243.tar.gz
mmc: atmel-mci: save and restore sdioirq when soft reset is performed
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 <ludovic.desroches@atmel.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host/atmel-mci.c')
-rw-r--r--drivers/mmc/host/atmel-mci.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index fcfe1eb..6985cdb 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -969,11 +969,14 @@ static void atmci_start_request(struct atmel_mci *host,
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);
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