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authorValentine Barshak <vbarshak@ru.mvista.com>2008-02-05 13:36:49 -0500
committerJosh Boyer <jwboyer@linux.vnet.ibm.com>2008-02-06 22:02:57 -0500
commite8318d98e95ddd3969c0701b5d15ec961ce786b2 (patch)
treef395df1ecab6962ece80b9082d0b953e55c9273a /Documentation
parent853265e588153dca22c82b84df39bbb40abd7ad0 (diff)
[POWERPC] 4xx: PCIe indirect DCR spinlock fix.
Since we have mfdcri() and mtdcri() as macros, we can't use constructions, such as "mtdcri(base, reg, mfdcri(base, reg) | val)". In this case the mfdcri() stuff is not evaluated first. It's evaluated inside the mtdcri() macro and we have the dcr_ind_lock spinlock acquired twice. To avoid this error, I've added __mfdcri()/__mtdcri() inline functions that take the lock after register name fix-up. Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
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