From dc4adbf41385486b0c73e7382ce73f0e8b873243 Mon Sep 17 00:00:00 2001 From: Mark Haverkamp Date: Mon, 27 Mar 2006 09:44:26 -0800 Subject: [SCSI] aacraid: Re-start helper thread if it dies Received from Mark Salyzyn Since the helper thread for the driver can be killed unceremoniously by an application, we detect the loss of the helper and restart it. Signed-off-by: Mark Haverkamp Signed-off-by: James Bottomley --- drivers/scsi/aacraid/commctrl.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers') diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c index 47fefca..9f75144 100644 --- a/drivers/scsi/aacraid/commctrl.c +++ b/drivers/scsi/aacraid/commctrl.c @@ -38,6 +38,8 @@ #include #include #include +#include +#include #include #include @@ -293,6 +295,16 @@ return_fib: status = 0; } else { spin_unlock_irqrestore(&dev->fib_lock, flags); + /* If someone killed the AIF aacraid thread, restart it */ + status = !dev->aif_thread; + if (status && dev->queues && dev->fsa_dev) { + /* Be paranoid, be very paranoid! */ + kthread_stop(dev->thread); + ssleep(1); + dev->aif_thread = 0; + dev->thread = kthread_run(aac_command_thread, dev, dev->name); + ssleep(1); + } if (f.wait) { if(down_interruptible(&fibctx->wait_sem) < 0) { status = -EINTR; -- cgit v1.1