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ASoC: Intel: sst: fix sst_memcpy32 wrong with non-4x bytes issue

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sst_memcpy32() only copied bytes/4 32bits, which means it dropped
the remaining bytes%4 bytes wrongly.

Here add copying those missing bytes, first to a 32bits tmp, and
then write the tmp to 32bits iomem.

Signed-off-by: Jie Yang <yang.jie@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jie Yang 2015-12-14 22:27:13 +08:00 committed by Mark Brown
parent af1086ba05
commit 1cf8dfd90f
1 changed files with 15 additions and 1 deletions
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16
sound/soc/intel/common/sst-firmware.c
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@ -51,8 +51,22 @@ struct sst_dma {
static inline void sst_memcpy32(volatile void __iomem *dest, void *src, u32 bytes)
{
u32 tmp = 0;
int i, m, n;
const u8 *src_byte = src;
m = bytes / 4;
n = bytes % 4;
/* __iowrite32_copy use 32bit size values so divide by 4 */
__iowrite32_copy((void *)dest, src, bytes/4);
__iowrite32_copy((void *)dest, src, m);
if (n) {
for (i = 0; i < n; i++)
tmp |= (u32)*(src_byte + m * 4 + i) << (i * 8);
__iowrite32_copy((void *)(dest + m * 4), &tmp, 1);
}
}
static void sst_dma_transfer_complete(void *arg)