commit: 18ee684b8ab666329e0a0a72d8b70f16fb0e2243 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
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]> Cc: stable <[email protected]> Signed-off-by: Nicolas Ferre <[email protected]> Signed-off-by: Chris Ball <[email protected]> --- 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 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); -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
