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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2007-10-20 00:32:35 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2007-10-20 00:32:35 +0200
commite65dde715c4241d6b17d86fa4ada2f78668274d9 (patch)
tree649349b79ebd41a36cd44f0316939a057e0b95c0 /drivers
parentf949820de30b6fd0eb958f7eea87dac190de1cec (diff)
opti621: fix deadlock on error handling
* Stop abusing ide_lock lock (switch to a private locking). Fixes same issue as fixed by Alan Cox in atiixp host driver with commit 6c5f8cc33eb2e10b6ab788bbe259fc142a068627. * Bump driver version. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/ide/pci/opti621.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/ide/pci/opti621.c b/drivers/ide/pci/opti621.c
index 8d28f335611..8953d9c3926 100644
--- a/drivers/ide/pci/opti621.c
+++ b/drivers/ide/pci/opti621.c
@@ -1,5 +1,5 @@
/*
- * linux/drivers/ide/pci/opti621.c Version 0.8 Aug 27, 2007
+ * linux/drivers/ide/pci/opti621.c Version 0.9 Sep 24, 2007
*
* Copyright (C) 1996-1998 Linus Torvalds & authors (see below)
*/
@@ -133,6 +133,8 @@ static int reg_base;
#define PIO_NOT_EXIST 254
#define PIO_DONT_KNOW 255
+static DEFINE_SPINLOCK(opti621_lock);
+
/* there are stored pio numbers from other calls of opti621_set_pio_mode */
static void compute_pios(ide_drive_t *drive, const u8 pio)
/* Store values into drive->drive_data
@@ -278,7 +280,7 @@ static void opti621_set_pio_mode(ide_drive_t *drive, const u8 pio)
second.recovery_time, drdy);
#endif
- spin_lock_irqsave(&ide_lock, flags);
+ spin_lock_irqsave(&opti621_lock, flags);
reg_base = hwif->io_ports[IDE_DATA_OFFSET];
@@ -317,7 +319,7 @@ static void opti621_set_pio_mode(ide_drive_t *drive, const u8 pio)
/* and read prefetch for both drives */
write_reg(misc, MISC_REG);
- spin_unlock_irqrestore(&ide_lock, flags);
+ spin_unlock_irqrestore(&opti621_lock, flags);
}
/*