diff options
| author | Kashyap, Desai <kashyap.desai@lsi.com> | 2009-08-20 13:22:00 +0530 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2009-09-05 09:34:49 -0500 |
| commit | 155dd4c763694222c125e65438d823f58ea653bc (patch) | |
| tree | 0db7b5b8d41c165222357ac8dee45482f1425faa /drivers/scsi/mpt2sas/mpt2sas_ctl.c | |
| parent | cd4e12e8ad246ec5bc23ab04d0da0e6985025620 (diff) | |
[SCSI] mpt2sas: Prevent sending command to FW while Host Reset
This patch renames the flag for indicating host reset from
ioc_reset_in_progress to shost_recovery. It also removes the spin locks
surrounding the setting of this flag, which are unnecessary. Sanity checks on
the shost_recovery flag were added thru out the code so as to prevent sending
firmware commands during host reset. Also, the setting of the shost state to
SHOST_RECOVERY was removed to prevent deadlocks, this is actually better
handled by the shost_recovery flag.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Reviewed-by: Eric Moore <Eric.moore@lsi.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/mpt2sas/mpt2sas_ctl.c')
| -rw-r--r-- | drivers/scsi/mpt2sas/mpt2sas_ctl.c | 16 |
1 files changed, 2 insertions, 14 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_ctl.c b/drivers/scsi/mpt2sas/mpt2sas_ctl.c index 14e473d1fa7b..c2a51018910f 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_ctl.c +++ b/drivers/scsi/mpt2sas/mpt2sas_ctl.c @@ -1963,7 +1963,6 @@ _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg) { enum block_state state; long ret = -EINVAL; - unsigned long flags; state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING; @@ -1989,13 +1988,8 @@ _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg) !ioc) return -ENODEV; - spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); - if (ioc->shost_recovery) { - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, - flags); + if (ioc->shost_recovery) return -EAGAIN; - } - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_command)) { uarg = arg; @@ -2098,7 +2092,6 @@ _ctl_compat_mpt_command(struct file *file, unsigned cmd, unsigned long arg) struct mpt2_ioctl_command karg; struct MPT2SAS_ADAPTER *ioc; enum block_state state; - unsigned long flags; if (_IOC_SIZE(cmd) != sizeof(struct mpt2_ioctl_command32)) return -EINVAL; @@ -2113,13 +2106,8 @@ _ctl_compat_mpt_command(struct file *file, unsigned cmd, unsigned long arg) if (_ctl_verify_adapter(karg32.hdr.ioc_number, &ioc) == -1 || !ioc) return -ENODEV; - spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); - if (ioc->shost_recovery) { - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, - flags); + if (ioc->shost_recovery) return -EAGAIN; - } - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); memset(&karg, 0, sizeof(struct mpt2_ioctl_command)); karg.hdr.ioc_number = karg32.hdr.ioc_number; |