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linux-sg2042
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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 6c5f8cc33e.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2007-10-20 00:32:35 +02:00
parent 8562043606
commit 2047e15be4
1 changed files with 4 additions and 2 deletions
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6
drivers/ide/legacy/ali14xx.c
View File

@ -102,6 +102,8 @@ static void outReg (u8 data, u8 reg)
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 @@ static void ali14xx_set_pio_mode(ide_drive_t *drive, const u8 pio)
/* 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);
}
/*