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authorMikulas Patocka <mpatocka@redhat.com>2008-07-15 17:16:38 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-15 14:30:56 -0700
commit56d387ec210049be2fdb0fe26ba6d6de1b3c1b15 (patch)
tree7765729d4d4b51007de544af6abb5f7841f515cb
parent987ff954cda2a206f5e694f267b0ccad869c257c (diff)
downloadlinux-56d387ec210049be2fdb0fe26ba6d6de1b3c1b15.tar.gz
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>
-rw-r--r--drivers/scsi/a100u2w.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/a100u2w.c b/drivers/scsi/a100u2w.c
index 1dd0fcfe1d70..1e8bdd457834 100644
--- 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      */