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ide: Fix an overrun found in the CS5535 IDE driver

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As found by the Coverity checker, and reported by Adrian Bunk, this
fixes a overrun error in the CS5535 IDE driver.  Somebody got a little
excited with the if() statement - the CS5535 only supports UDMA 0-4.

Bart:
Not a bug per se since the upper layer will never feed this function
with speed > XFER_UDMA_4 (thanks to ->ultra_mask being set to 0x1f).

Worth fixing anyway.

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Jordan Crouse 2007-08-01 23:46:42 +02:00 committed by Bartlomiej Zolnierkiewicz
parent 8d4fbcfbe0
commit 32a70a817a
1 changed files with 1 additions and 1 deletions
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2
drivers/ide/pci/cs5535.c
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@ -116,7 +116,7 @@ static void cs5535_set_speed(ide_drive_t *drive, u8 speed)
reg &= 0x80000000UL; /* Preserve the PIO format bit */
if (speed >= XFER_UDMA_0 && speed <= XFER_UDMA_7)
if (speed >= XFER_UDMA_0 && speed <= XFER_UDMA_4)
reg |= cs5535_udma_timings[speed - XFER_UDMA_0];
else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2)
reg |= cs5535_mwdma_timings[speed - XFER_MW_DMA_0];