AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

mmc: atmel-mci: save and restore sdioirq when soft reset is performed

Browse Source 
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>
This commit is contained in:
Ludovic Desroches 2012-02-09 11:55:29 +01:00 committed by Chris Ball
parent 00d9ac0875
commit 18ee684b8a
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/mmc/host/atmel-mci.c
View File

@ -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);