Commit 97b715b6 authored May 26, 2018 by Wei Yongjun Committed by Greg Kroah-Hartman Jul 07, 2018

misc: ibmvmc: Use GFP_ATOMIC under spin lock



The function alloc_dma_buffer() is called from ibmvmc_add_buffer(),
in which a spin lock be held here, so we should use GFP_ATOMIC when
a lock is held.

Fixes: 0eca353e ("misc: IBM Virtual Management Channel Driver (VMC)")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 5faecb01

drivers/misc/ibmvmc.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -273,7 +273,7 @@ static void alloc_dma_buffer(struct vio_dev vdev, size_t size,
		dma_addr_t *dma_handle)
		{
		/* allocate memory */
		void *buffer = kzalloc(size, GFP_KERNEL);
		void *buffer = kzalloc(size, GFP_ATOMIC);

		if (!buffer) {
		*dma_handle = 0;