diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-pxa/ssp.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/ssp.c b/arch/arm/mach-pxa/ssp.c index 575b662200a7..4954da907d42 100644 --- a/arch/arm/mach-pxa/ssp.c +++ b/arch/arm/mach-pxa/ssp.c @@ -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) |