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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2007-05-10 16:46:13 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2007-05-11 17:18:55 +0100
commitc7b87f3d5037a35b5c7bb916ffc826be3fcb208d (patch)
tree57fb9d7bb21965fa0d78b26043cf459ce51a9668 /arch
parent129a84de2347002f09721cda3155ccfd19fade40 (diff)
[ARM] ecard: add helper function for setting ecard irq ops
Rather than having every driver fiddle about setting its private IRQ operations and data, provide a helper function to contain this functionality in one place. Arrange to remove the driver-private IRQ operations and data when the device is removed from the driver, and remove the driver private code to do this. This fixes potential problems caused by drivers forgetting to remove these hooks. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/kernel/ecard.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/kernel/ecard.c b/arch/arm/kernel/ecard.c
index bdbd7da9928..65f1398723a 100644
--- a/arch/arm/kernel/ecard.c
+++ b/arch/arm/kernel/ecard.c
@@ -958,6 +958,14 @@ void ecard_release_resources(struct expansion_card *ec)
}
EXPORT_SYMBOL(ecard_release_resources);
+void ecard_setirq(struct expansion_card *ec, const struct expansion_card_ops *ops, void *irq_data)
+{
+ ec->irq_data = irq_data;
+ barrier();
+ ec->ops = ops;
+}
+EXPORT_SYMBOL(ecard_setirq);
+
/*
* Probe for an expansion card.
*
@@ -1133,6 +1141,14 @@ static int ecard_drv_remove(struct device *dev)
drv->remove(ec);
ecard_release(ec);
+ /*
+ * Restore the default operations. We ensure that the
+ * ops are set before we change the data.
+ */
+ ec->ops = &ecard_default_ops;
+ barrier();
+ ec->irq_data = NULL;
+
return 0;
}