diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-01-14 12:49:46 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-01-20 21:57:35 +0400 |
| commit | 98250221691f728b7cad6deed98866f8847e683f (patch) | |
| tree | b0d75ec3f7ef11545f1d79c7384bf6d3630f4a9a /drivers/mfd/mcp-core.c | |
| parent | 65f2e753f1eb09d3a7e2a0d16408a5433b4097b2 (diff) | |
| download | linux-98250221691f728b7cad6deed98866f8847e683f.tar.xz | |
MFD: mcp-core: fix complaints from the genirq layer
The genirq layer complains if an interrupt handler returns with
interrupts enabled. The UCB1x00 handler does just this, because
ucb1x00_enable() calls mcp_enable(), which uses spin_lock_irq()
rather than spin_lock_irqsave(). Convert this, and the divisor
setting functions to use spin_lock_irqsave().
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/mfd/mcp-core.c')
| -rw-r--r-- | drivers/mfd/mcp-core.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/mfd/mcp-core.c b/drivers/mfd/mcp-core.c index 84815f9ef636..86cc3f7841cd 100644 --- a/drivers/mfd/mcp-core.c +++ b/drivers/mfd/mcp-core.c @@ -93,9 +93,11 @@ static struct bus_type mcp_bus_type = { */ void mcp_set_telecom_divisor(struct mcp *mcp, unsigned int div) { - spin_lock_irq(&mcp->lock); + unsigned long flags; + + spin_lock_irqsave(&mcp->lock, flags); mcp->ops->set_telecom_divisor(mcp, div); - spin_unlock_irq(&mcp->lock); + spin_unlock_irqrestore(&mcp->lock, flags); } EXPORT_SYMBOL(mcp_set_telecom_divisor); @@ -108,9 +110,11 @@ EXPORT_SYMBOL(mcp_set_telecom_divisor); */ void mcp_set_audio_divisor(struct mcp *mcp, unsigned int div) { - spin_lock_irq(&mcp->lock); + unsigned long flags; + + spin_lock_irqsave(&mcp->lock, flags); mcp->ops->set_audio_divisor(mcp, div); - spin_unlock_irq(&mcp->lock); + spin_unlock_irqrestore(&mcp->lock, flags); } EXPORT_SYMBOL(mcp_set_audio_divisor); @@ -163,10 +167,11 @@ EXPORT_SYMBOL(mcp_reg_read); */ void mcp_enable(struct mcp *mcp) { - spin_lock_irq(&mcp->lock); + unsigned long flags; + spin_lock_irqsave(&mcp->lock, flags); if (mcp->use_count++ == 0) mcp->ops->enable(mcp); - spin_unlock_irq(&mcp->lock); + spin_unlock_irqrestore(&mcp->lock, flags); } EXPORT_SYMBOL(mcp_enable); |