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Commit bd8d6dd4 authored by Kashyap Desai's avatar Kashyap Desai Committed by James Bottomley
Browse files

[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: default avatarKashyap Desai <Kashyap.Desai@lsi.com>
Signed-off-by: default avatarAdam Radford <aradford@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 338b131a

drivers/scsi/megaraid/megaraid_sas_base.c

+2 −1
Original line number Diff line number Diff line
@@ -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;