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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2009-06-22 07:38:26 +0000
committerDavid S. Miller <davem@davemloft.net>2009-06-24 00:32:32 -0700
commit346c17a6cf60375323adfaa4b8a9d841049f890e (patch)
tree496e65570ee7b7725806c1a5f21598521022f318 /include/linux/ide.h
parentd9ae62433e46909fc9e7d97ce74202c2851667b8 (diff)
ide: relax DMA info validity checking
There are some broken devices that report multiple DMA xfer modes enabled at once (ATA spec doesn't allow it) but otherwise work fine with DMA so just delete ide_id_dma_bug(). [ As discovered by detective work by Frans and Bart, due to how handling of the ID block was handled before commit c419993 ("ide-iops: only clear DMA words on setting DMA mode") this check was always seeing zeros in the fields or other similar garbage. Therefore this check wasn't actually checking anything. Now that the tests actually check the real bits, all we see are devices that trigger the check yet work perfectly fine, therefore killing this useless check is the best thing to do. -DaveM ] Reported-by: Frans Pop <elendil@planet.nl> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/ide.h')
-rw-r--r--include/linux/ide.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 95c6e00a72e..cf1f3888067 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1361,7 +1361,6 @@ int ide_in_drive_list(u16 *, const struct drive_list_entry *);
#ifdef CONFIG_BLK_DEV_IDEDMA
int ide_dma_good_drive(ide_drive_t *);
int __ide_dma_bad_drive(ide_drive_t *);
-int ide_id_dma_bug(ide_drive_t *);
u8 ide_find_dma_mode(ide_drive_t *, u8);
@@ -1402,7 +1401,6 @@ void ide_dma_lost_irq(ide_drive_t *);
ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
#else
-static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }