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>

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>
Ian Campbell · Tom Rini · Eric Lee · Eric Lee · Eric Lee · Eric Lee
1 parent b946322670
Showing 1 changed file with 1 additions and 1 deletions Side-by-side Diff
drivers/block/ahci.c
@@ -41,7 +41,7 @@
 #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)
 {
...	...	@@ -41,7 +41,7 @@
41	41	#define WAIT_MS_SPINUP 20000
42	42	#define WAIT_MS_DATAIO 5000
43	43	#define WAIT_MS_FLUSH 5000
44		-#define WAIT_MS_LINKUP 4
	44	+#define WAIT_MS_LINKUP 40
45	45
46	46	static inline u32 ahci_port_base(u32 base, u32 port)
47	47	{