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authorCorey Minyard <cminyard@mvista.com>2007-10-18 03:07:08 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-18 14:37:32 -0700
commitc45adc39156dfb0a296df218d62ba8b68cadf12e (patch)
treefd96c4475d246334b7e295e4f482af5d89422dcd /drivers/char
parente8c44319c691dfb4a0b039b095204c040df9b01a (diff)
downloadlinux-c45adc39156dfb0a296df218d62ba8b68cadf12e.tar.bz2
IPMI: don't init irq until ready
Patrick found a race at startup. Interrupts were being enabled for the IPMI interface before the driver was really ready to handle them. This could result in an oops if something was pending on the interface at startup and interrupt were already enabled (technically shouldn't happen, but need to cover for this in real life). So move the IRQ setup to the code that starts the actual IPMI processing. Signed-off-by: Corey Minyard <cminyard@mvista.com> Cc: Patrick Schoeller <Patrick.Schoeller@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/ipmi/ipmi_si_intf.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index c1222e98525d..e018932af795 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -1006,6 +1006,10 @@ static int smi_start_processing(void *send_info,
new_smi->intf = intf;
+ /* Try to claim any interrupts. */
+ if (new_smi->irq_setup)
+ new_smi->irq_setup(new_smi);
+
/* Set up the timer that drives the interface. */
setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi);
new_smi->last_timeout_jiffies = jiffies;
@@ -2765,10 +2769,6 @@ static int try_smi_init(struct smi_info *new_smi)
setup_oem_data_handler(new_smi);
setup_xaction_handlers(new_smi);
- /* Try to claim any interrupts. */
- if (new_smi->irq_setup)
- new_smi->irq_setup(new_smi);
-
INIT_LIST_HEAD(&(new_smi->xmit_msgs));
INIT_LIST_HEAD(&(new_smi->hp_xmit_msgs));
new_smi->curr_msg = NULL;