From: Ludovic Desroches <ludovic.desroches@xxxxxxxxx>
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@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
drivers/mmc/host/atmel-mci.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index 09ac13b..dfa5dd9 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -965,11 +965,14 @@ 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);
--
1.7.5.4
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