ali14xx: fix deadlock on error handling
Stop abusing ide_lock lock by switching to a private locking.
Fixes same issue as fixed by Alan Cox in atiixp host driver with
commit 6c5f8cc33eb2e10b6ab788bbe259fc142a068627.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/legacy/ali14xx.c b/drivers/ide/legacy/ali14xx.c
index 0973c85..10311ec 100644
--- a/drivers/ide/legacy/ali14xx.c
+++ b/drivers/ide/legacy/ali14xx.c
@@ -102,6 +102,8 @@
outb_p(data, dataPort);
}
+static DEFINE_SPINLOCK(ali14xx_lock);
+
/*
* Set PIO mode for the specified drive.
* This function computes timing parameters
@@ -129,14 +131,14 @@
/* stuff timing parameters into controller registers */
driveNum = (HWIF(drive)->index << 1) + drive->select.b.unit;
- spin_lock_irqsave(&ide_lock, flags);
+ spin_lock_irqsave(&ali14xx_lock, flags);
outb_p(regOn, basePort);
outReg(param1, regTab[driveNum].reg1);
outReg(param2, regTab[driveNum].reg2);
outReg(param3, regTab[driveNum].reg3);
outReg(param4, regTab[driveNum].reg4);
outb_p(regOff, basePort);
- spin_unlock_irqrestore(&ide_lock, flags);
+ spin_unlock_irqrestore(&ali14xx_lock, flags);
}
/*