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As noted by Mark Lord, the outdated ATA1 spec specifies a 20msec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>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/ide.h b/include/linux/ide.h
index e4135d6e0556..0ec612959042 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 */