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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-20 00:32:35 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-20 00:32:35 +0200 |
| commit | e65dde715c4241d6b17d86fa4ada2f78668274d9 (patch) | |
| tree | 649349b79ebd41a36cd44f0316939a057e0b95c0 /drivers/ide | |
| parent | f949820de30b6fd0eb958f7eea87dac190de1cec (diff) | |
| download | lwn-e65dde715c4241d6b17d86fa4ada2f78668274d9.tar.gz lwn-e65dde715c4241d6b17d86fa4ada2f78668274d9.zip | |
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/ide')
| -rw-r--r-- | drivers/ide/pci/opti621.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/ide/pci/opti621.c b/drivers/ide/pci/opti621.c index 8d28f335611b..8953d9c3926f 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); } /* |