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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Pine.LNX.4.64.0807151716030.4356@devserv.devel.redhat.com>
Date:	Tue, 15 Jul 2008 17:16:38 -0400 (EDT)
From:	Mikulas Patocka <mpatocka@...hat.com>
To:	torvalds@...ux-foundation.org
cc:	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/4] 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@...hat.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      */
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/