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authorDavid S. Miller <davem@davemloft.net>2009-12-02 21:58:33 -0800
committerDavid S. Miller <davem@davemloft.net>2009-12-02 21:58:33 -0800
commit602da297e293eb2cbd28dcdbbe247593a46a853a (patch)
tree1a53703a521cc5abc83188abf65b10d4e53267ce /include/linux/ide.h
parent8492090542b8bc6b65b60ccf0b49ff8f0a460ab2 (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 As noted by Mark Lord, the outdated ATA1 spec specifies a 20msec timeout for setting DRQ but lots of common devices overshoot this.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>
Diffstat (limited to 'include/linux/ide.h')
-rw-r--r--include/linux/ide.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/ide.h b/include/linux/ide.h
index e4135d6e055..0ec61295904 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -125,8 +125,8 @@ struct ide_io_ports {
* Timeouts for various operations:
*/
enum {
- /* spec allows up to 20ms */
- WAIT_DRQ = HZ / 10, /* 100ms */
+ /* spec allows up to 20ms, but CF cards and SSD drives need more */
+ WAIT_DRQ = 1 * HZ, /* 1s */
/* some laptops are very slow */
WAIT_READY = 5 * HZ, /* 5s */
/* should be less than 3ms (?), if all ATAPI CD is closed at boot */