From: Kashyap Desai Date: Wed, 18 Jul 2012 01:20:44 +0000 (-0700) Subject: [SCSI] megaraid_sas: Move poll_aen_lock initializer X-Git-Tag: v3.6-rc6~33^2~2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bd8d6dd43a77bfd2b8fef5b094b9d6095e169dee;p=profile%2Fivi%2Fkernel-x86-ivi.git [SCSI] megaraid_sas: Move poll_aen_lock initializer 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 Signed-off-by: Adam Radford Cc: Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index dc27598..ed38454 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -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->hba_lock); spin_lock_init(&instance->completion_lock); - spin_lock_init(&poll_aen_lock); mutex_init(&instance->aen_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, MEGASAS_EXT_VERSION); + spin_lock_init(&poll_aen_lock); + support_poll_for_event = 2; support_device_change = 1;