Add udelay to A100U2W SCSI driver

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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/scsi/a100u2w.c b/drivers/scsi/a100u2w.c
index 1dd0fcf..1e8bdd4 100644 (file)
--- a/drivers/scsi/a100u2w.c
+++ b/drivers/scsi/a100u2w.c
@@ -401,6 +401,7 @@ static u8 orc_load_firmware(struct orc_host * host)
 
        /* 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      */