From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-Id: <20111102221452.384134289@clark.kroah.org> Date: Wed, 02 Nov 2011 15:13:51 -0700 From: Greg KH To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Guy Martin , Rolf Eike Beer , Matt Turner , Jeff Kirsher , Jesse Brandeburg , "David S. Miller" Subject: [025/107] e1000: Fix driver to be used on PA RISC C8000 workstations In-Reply-To: <20111102221600.GA26650@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: 2.6.32-longterm review patch. If anyone has any objections, please let us know. ------------------ From: Jeff Kirsher commit e2faeec2de9e2c73958e6ea6065dde1e8cd6f3a2 upstream. The checksum field in the EEPROM on HPPA is really not a checksum but a signature (0x16d6). So allow 0x16d6 as the matching checksum on HPPA systems. This issue is present on longterm/stable kernels, I have verified that this patch is applicable back to at least 2.6.32.y kernels. v2- changed ifdef to use CONFIG_PARISC instead of __hppa__ CC: Guy Martin CC: Rolf Eike Beer CC: Matt Turner Reported-by: Mikulas Patocka Signed-off-by: Jeff Kirsher Acked-by: Jesse Brandeburg Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/e1000/e1000_hw.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/net/e1000/e1000_hw.c +++ b/drivers/net/e1000/e1000_hw.c @@ -3842,6 +3842,12 @@ s32 e1000_validate_eeprom_checksum(struc checksum += eeprom_data; } +#ifdef CONFIG_PARISC + /* This is a signature and not a checksum on HP c8000 */ + if ((hw->subsystem_vendor_id == 0x103C) && (eeprom_data == 0x16d6)) + return E1000_SUCCESS; + +#endif if (checksum == (u16) EEPROM_SUM) return E1000_SUCCESS; else {