From: Ian Campbell <ijc@hellion.org.uk>
Date: Fri, 7 Mar 2014 01:20:58 +0000 (+0000)
Subject: ahci: wait longer for link.
X-Git-Tag: v2014.04-rc2~6
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=73545f75b66d5bd68076742f082a5b7fdfb5b086;p=platform%2Fkernel%2Fu-boot.git

ahci: wait longer for link.

I have observed timeouts on a cubietruck.

The increase to 40ms is completely arbitrary and Works For Me(tm). I
couldn't find a good reference for how long you are supposed to wait,
although googling around it seems like tens of ms rather than single
digits is more common. I don't think there is any harm in waiting a bit
longer.

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
---

diff --git a/drivers/block/ahci.c b/drivers/block/ahci.c
index 22621bf..a409f63 100644
--- a/drivers/block/ahci.c
+++ b/drivers/block/ahci.c
@@ -41,7 +41,7 @@ u16 *ataid[AHCI_MAX_PORTS];
 #define WAIT_MS_SPINUP	20000
 #define WAIT_MS_DATAIO	5000
 #define WAIT_MS_FLUSH	5000
-#define WAIT_MS_LINKUP	4
+#define WAIT_MS_LINKUP	40
 
 static inline u32 ahci_port_base(u32 base, u32 port)
 {