From b207384ec8dd38b408be6c29bcf7a3484771c34e Mon Sep 17 00:00:00 2001 From: Ludovic Desroches Date: Thu, 9 Feb 2012 11:55:29 +0100 Subject: mmc: atmel-mci: save and restore sdioirq when soft reset is performed 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 Signed-off-by: Nicolas Ferre Signed-off-by: Chris Ball Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/host/atmel-mci.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index a7ee50271465..72bc75682247 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); -- cgit v1.2.3