[PATCH 1/4] atmel-mci: debugfs: enable clock before dumping regs

From: Haavard Skinnemoen
Date: Fri Sep 19 2008 - 15:11:06 EST


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

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@xxxxxxxxx>
---
drivers/mmc/host/atmel-mci.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index 0bd06f5..6de773d 100644
--- 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",
--
1.5.6.5

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