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e1000: Fix driver to be used on PA RISC C8000 workstations

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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 <gmsoft@tuxicoman.be>
CC: Rolf Eike Beer <eike-kernel@sf-tec.de>
CC: Matt Turner <mattst88@gmail.com>
Reported-by: Mikulas Patocka <mikulas@artax.kerlin.mff.cuni.cz>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jeff Kirsher 2011-08-30 20:58:56 -04:00 committed by David S. Miller
parent 31a0479546
commit e2faeec2de
1 changed files with 6 additions and 0 deletions
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6
drivers/net/e1000/e1000_hw.c
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@ -4026,6 +4026,12 @@ s32 e1000_validate_eeprom_checksum(struct e1000_hw *hw)
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 {