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>
ordernum = get_order(size);
image_update_buffer =
(unsigned char *)__get_free_pages(GFP_DMA32, ordernum);
+ spin_lock(&rbu_data.lock);
if (!image_update_buffer) {
pr_debug("Not enough memory for image update:"
"size = %ld\n", size);
if (WARN_ON_ONCE(img_buf_phys_addr > BIOS_SCAN_LIMIT))
return -EINVAL; /* can't happen per definition */
- spin_lock(&rbu_data.lock);
rbu_data.image_update_buffer = image_update_buffer;
rbu_data.image_update_buffer_size = size;
rbu_data.bios_image_size = rbu_data.image_update_buffer_size;