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authorChuck Ebbert <cebbert@redhat.com>2008-06-12 15:21:42 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-06-12 18:05:41 -0700
commitcef33400d0349fb24b6f8b7dea79b66e3144fd8b (patch)
tree351e9da9d6805393e011f873b14a9100ebc7c741 /drivers
parent30ec261e5f97986644c0982543bc1cee1b2782bf (diff)
downloadop-kernel-dev-cef33400d0349fb24b6f8b7dea79b66e3144fd8b.zip
op-kernel-dev-cef33400d0349fb24b6f8b7dea79b66e3144fd8b.tar.gz
mmc: wbsd: initialize tasklets before requesting interrupt
With CONFIG_DEBUG_SHIRQ set we will get an interrupt as soon as we allocate one. Tasklets may be scheduled in the interrupt handler but they will be initialized after the handler returns, causing a BUG() in kernel/softirq.c when they run. Should fix this Fedora bug report: https://bugzilla.redhat.com/show_bug.cgi?id=449817 Signed-off-by: Chuck Ebbert <cebbert@redhat.com> Acked-by: Pierre Ossman <drzeus@drzeus.cx> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/host/wbsd.c21
1 files changed, 10 insertions, 11 deletions
diff --git a/drivers/mmc/host/wbsd.c b/drivers/mmc/host/wbsd.c
index be624a0..c303e7f 100644
--- a/drivers/mmc/host/wbsd.c
+++ b/drivers/mmc/host/wbsd.c
@@ -1457,17 +1457,7 @@ static int __devinit wbsd_request_irq(struct wbsd_host *host, int irq)
int ret;
/*
- * Allocate interrupt.
- */
-
- ret = request_irq(irq, wbsd_irq, IRQF_SHARED, DRIVER_NAME, host);
- if (ret)
- return ret;
-
- host->irq = irq;
-
- /*
- * Set up tasklets.
+ * Set up tasklets. Must be done before requesting interrupt.
*/
tasklet_init(&host->card_tasklet, wbsd_tasklet_card,
(unsigned long)host);
@@ -1480,6 +1470,15 @@ static int __devinit wbsd_request_irq(struct wbsd_host *host, int irq)
tasklet_init(&host->finish_tasklet, wbsd_tasklet_finish,
(unsigned long)host);
+ /*
+ * Allocate interrupt.
+ */
+ ret = request_irq(irq, wbsd_irq, IRQF_SHARED, DRIVER_NAME, host);
+ if (ret)
+ return ret;
+
+ host->irq = irq;
+
return 0;
}
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