Commit 21fc0b9f authored by Eli Billauer's avatar Eli Billauer Committed by Greg Kroah-Hartman
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staging: xillybus: Removed write memory barriers before wait_event_*() 



According to Documentation/memory-barriers.txt, a memory barrier is put
in place by wait_event_*()

Signed-off-by: default avatarEli Billauer <eli.billauer@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9fdde366

drivers/staging/xillybus/xillybus_core.c

+1 −4
Original line number Diff line number Diff line
@@ -634,7 +634,6 @@ static int xilly_obtain_idt(struct xilly_endpoint *endpoint) 
	channel = endpoint->channels[1]; /* This should be generated ad-hoc */



	channel->wr_sleepy = 1;

	wmb(); /* Setting wr_sleepy must come before the command */



	iowrite32(1 |

		   (3 << 24), /* Opcode 3 for channel 0 = Send IDT */
@@ -1968,7 +1967,7 @@ EXPORT_SYMBOL(xillybus_init_endpoint); 
static int xilly_quiesce(struct xilly_endpoint *endpoint)

{

	endpoint->idtlen = -1;

	wmb(); /* Make sure idtlen is set before sending command */



	iowrite32((u32) (endpoint->dma_using_dac & 0x0001),

		  endpoint->registers + fpga_dma_control_reg);
@@ -2029,8 +2028,6 @@ int xillybus_endpoint_discovery(struct xilly_endpoint *endpoint) 


	endpoint->idtlen = -1;



	smp_wmb();



	/*

	 * Set DMA 32/64 bit mode, quiesce the device (?!) and get IDT

	 * buffer size.

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