[PATCH 2/4] Add udelay to A100U2W SCSI driver

Mikulas Patocka
2008-07-15T14:12:16Z

udelay is required on Sun Ultra 5.
I don't know any reason or explanation for this, it was found purely
experimentally.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
---
drivers/scsi/a100u2w.c | 1 +
1 file changed, 1 insertion(+)

Index: linux-2.6.26-rc8/drivers/scsi/a100u2w.c
===================================================================
--- linux-2.6.26-rc8.orig/drivers/scsi/a100u2w.c 2008-07-01 18:48:09.000000000 +0200
+++ linux-2.6.26-rc8/drivers/scsi/a100u2w.c 2008-07-01 18:48:11.000000000 +0200
@@ -401,6 +401,7 @@ static u8 orc_load_firmware(struct orc_h

/* Copy the code from the BIOS to the SRAM */

+ udelay(500); /* Required on Sun Ultra 5 ... 350 -> failures */
bios_addr = (u16) le32_to_cpu(data32); /* FW code locate at BIOS address + ? */
for (i = 0, data32_ptr = (u8 *) & data32; /* Download the code */
i < 0x1000; /* Firmware code size = 4K */