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We need to ensure rbu_data.lock is always held on return.
Fixes: 289790a3ea94 ("platform/x86: dell_rbu: stop abusing the DMA API")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Stuart Hayes <stuart.w.hayes@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
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For some odd reason dell_rbu actually seems to want the physical and
not a bus address for the allocated buffer. Lets assume that actually
is correct given that it is BIOS-related and that is a good source
of insanity. In that case we should not use dma_alloc_coherent with
a NULL device to allocate memory, but use GFP_DMA32 to stay under
the 32-bit BIOS limit.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Stuart Hayes <stuart.w.hayes@gmail.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
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Move dell_rbu to the more appropriate directory drivers/platform/x86.
Signed-off-by: Stuart Hayes <stuart.w.hayes@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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