atmel-mci: debugfs: enable clock before dumping regs

Make sure that the peripheral clock is enabled before reading the MMIO
registers for the debugfs "regs" dump.

Signed-off-by: Haavard Skinnemoen <[email protected]>
Signed-off-by: Pierre Ossman <[email protected]>

diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index 0bd06f5bd62ffa414439dcd3a4c382124832c779..6de773d3a0cfde3d526f8dfdd2d41c9c3c7f56e9 100644 (file)
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -195,7 +195,9 @@ static int atmci_regs_show(struct seq_file *s, void *v)
 
        /* Grab a more or less consistent snapshot */
        spin_lock_irq(&host->mmc->lock);
+       clk_enable(host->mck);
        memcpy_fromio(buf, host->regs, MCI_REGS_SIZE);
+       clk_disable(host->mck);
        spin_unlock_irq(&host->mmc->lock);
 
        seq_printf(s, "MR:\t0x%08x%s%s CLKDIV=%u\n",