diff options
| author | David S. Miller <davem@davemloft.net> | 2009-12-02 21:58:33 -0800 |
|---|---|---|
| committer | Thomas Schwinge <thomas@codesourcery.com> | 2012-12-21 19:13:36 +0100 |
| commit | db8ec819c3863040aceae97ab35ef5c6ef3c898f (patch) | |
| tree | 3d166efc7af936b27e97de6ea288d7a16172a3fe | |
| parent | 07a7f30953c6ab3de4362bfd7925cfb2ded23fda (diff) | |
ide: Increase WAIT_DRQ to accomodate some CF cards and SSD drives.
Based upon a patch by Philippe De Muyter, and feedback from Mark
Lord and Robert Hancock.
As noted by Mark Lord, the outdated ATA1 spec specifies a 20msec
timeout for setting DRQ but lots of common devices overshoot this.
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from Linux kernel commit 602da297e293eb2cbd28dcdbbe247593a46a853a)
* linux/src/drivers/block/ide.h (WAIT_DRQ): Increase to 1 s.
| -rw-r--r-- | linux/src/drivers/block/ide.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/linux/src/drivers/block/ide.h b/linux/src/drivers/block/ide.h index 3351390..edeedc9 100644 --- a/linux/src/drivers/block/ide.h +++ b/linux/src/drivers/block/ide.h @@ -152,7 +152,8 @@ typedef unsigned char byte; /* used everywhere */ /* * Timeouts for various operations: */ -#define WAIT_DRQ (5*HZ/100) /* 50msec - spec allows up to 20ms */ +#define WAIT_DRQ (1*HZ) /* 1s - spec allows up to 20ms, but CF + * cards and SSD drives need more */ #ifdef CONFIG_APM #define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */ #else |