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[SCSI] megaraid_sas: Move poll_aen_lock initializer

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The following patch moves the poll_aen_lock initializer from
megasas_probe_one() to megasas_init().  This prevents a crash when a user
loads the driver and tries to issue a poll() system call on the ioctl
interface with no adapters present.

Signed-off-by: Kashyap Desai <Kashyap.Desai@lsi.com>
Signed-off-by: Adam Radford <aradford@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Kashyap Desai 2012-07-17 18:20:44 -07:00 committed by James Bottomley
parent 338b131a32
commit bd8d6dd43a
1 changed files with 2 additions and 1 deletions
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3
drivers/scsi/megaraid/megaraid_sas_base.c
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@ -4066,7 +4066,6 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
spin_lock_init(&instance->cmd_pool_lock); spin_lock_init(&instance->cmd_pool_lock);
spin_lock_init(&instance->hba_lock); spin_lock_init(&instance->hba_lock);
spin_lock_init(&instance->completion_lock); spin_lock_init(&instance->completion_lock);
spin_lock_init(&poll_aen_lock);
mutex_init(&instance->aen_mutex); mutex_init(&instance->aen_mutex);
mutex_init(&instance->reset_mutex); mutex_init(&instance->reset_mutex);
@ -5392,6 +5391,8 @@ static int __init megasas_init(void)
printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION, printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION,
MEGASAS_EXT_VERSION); MEGASAS_EXT_VERSION);
spin_lock_init(&poll_aen_lock);
support_poll_for_event = 2; support_poll_for_event = 2;
support_device_change = 1; support_device_change = 1;