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mpsc: use dma_set_mask insted of dma_supported 

This ensures the dma mask that is supported by the driver is recorded
in the device structure.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christoph Hellwig 2015-10-03 17:19:33 +02:00 committed by Greg Kroah-Hartman
parent 27c310c5c3
commit fc12c116b1
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/serial/mpsc.c
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@ -753,7 +753,7 @@ static int mpsc_alloc_ring_mem(struct mpsc_port_info *pi)
pi->port.line);
if (!pi->dma_region) {
if (!dma_supported(pi->port.dev, 0xffffffff)) {
if (!dma_set_mask(pi->port.dev, 0xffffffff)) {
printk(KERN_ERR "MPSC: Inadequate DMA support\n");
rc = -ENXIO;
} else if ((pi->dma_region = dma_alloc_noncoherent(pi->port.dev,