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Commit 732ce160 authored by eric miao's avatar eric miao Committed by Russell King
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[ARM] pxa: ensure SSP TX FIFO is empty instead of not full for pxa3xx 



Signed-off-by: default avatareric miao <eric.miao@marvell.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 5a1f21b1

arch/arm/mach-pxa/ssp.c

+10 −0
Original line number Diff line number Diff line
@@ -138,6 +138,16 @@ int ssp_flush(struct ssp_dev *dev) 
	struct ssp_device *ssp = dev->ssp;

	int timeout = TIMEOUT * 2;



	/* ensure TX FIFO is empty instead of not full */

	if (cpu_is_pxa3xx()) {

		while (__raw_readl(ssp->mmio_base + SSSR) & 0xf00) {

			if (!--timeout)

				return -ETIMEDOUT;

			cpu_relax();

		}

		timeout = TIMEOUT * 2;

	}



	do {

		while (__raw_readl(ssp->mmio_base + SSSR) & SSSR_RNE) {

		        if (!--timeout)