Bartlomiej Zolnierkiewicz wrote:
PIO4 is a maximum PIO mode supported by a driver. Using "255" as a max_mode
argument to ide_get_best_pio_mode() could result in wrong timings being used
by a driver (for "pio" equal to 5) or OOPS (for "pio" values > 5 && < 255).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
Acked-by: Sergei Shtylyov <sshtylyov@xxxxxxxxxxxxx>
---
drivers/ide/legacy/qd65xx.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
Index: b/drivers/ide/legacy/qd65xx.c
===================================================================
--- a/drivers/ide/legacy/qd65xx.c
+++ b/drivers/ide/legacy/qd65xx.c
@@ -258,8 +258,7 @@ static void qd6580_tune_drive (ide_drive
int recovery_time = 415; /* worst case values from the dos driver */
if (drive->id && !qd_find_disk_type(drive, &active_time, &recovery_time)) {
- pio = ide_get_best_pio_mode(drive, pio, 255, &d);
- pio = min_t(u8, pio, 4);
+ pio = ide_get_best_pio_mode(drive, pio, 4, &d);
switch (pio) {
case 0: break;
MBR, Sergei
-
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