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author | Lennert Buytenhek <buytenh@wantstofly.org> | 2006-06-02 19:51:50 +0100 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-06-02 19:51:50 +0100 |
commit | a77bc69138a4f52d003ca81d075f386953f6b25a (patch) | |
tree | 01ea99eb0eaceff5c8771e9a88d4f5fdb9607ef8 /arch/arm/mach-ixp23xx | |
parent | ba8f5baba79da8eb502f8534c3a8ecb64aceb790 (diff) | |
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[ARM] 3539/1: ixp23xx: fix __arch_ixp23xx_is_coherent() for A1 stepping
Patch from Lennert Buytenhek
The current __ixp23xx_arch_is_coherent() check assumes that the
lower byte of IXP23XX_PRODUCT_ID is identical to the lower byte of
processor_id, but this is not the case, and because of this we were
incorrectly enabling coherency on A1 stepping CPUs.
Stepping A1 of the ixp2350, which has a PRODUCT_ID of 0x401, has '02'
in the lower byte of processor_id, while A2, with a PRODUCT_ID of
0x402, has '04' in the lower byte of processor_id.
So, to check for >= A2, we really need to check the lower byte of
processor_id against >= 4.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-ixp23xx')
0 files changed, 0 insertions, 0 deletions