[U-Boot] fat: Use cache aligned buffers for fat_opendir

[Tom Rini]

On Fri, Nov 24, 2017 at 09:54:41AM +0100, Neil Armstrong wrote:

> Before this patch one could receive following errors when executing "fatls"
> command on machine with cache enabled (ex i.MX6Q) :
> 
> => fatls mmc 0:1
> CACHE: Misaligned operation at range [4f59dfc8, 4f59e7c8]
> CACHE: Misaligned operation at range [4f59dfc8, 4f59e7c8]
> ERROR: v7_outer_cache_inval_range - start address is not aligned - 0x4f59dfc8
> ERROR: v7_outer_cache_inval_range - stop address is not aligned - 0x4f59e7c8
> CACHE: Misaligned operation at range [4f59dfc8, 4f59e7c8]
> CACHE: Misaligned operation at range [4f59dfc8, 4f59e7c8]
> ERROR: v7_outer_cache_inval_range - start address is not aligned - 0x4f59dfc8
> ERROR: v7_outer_cache_inval_range - stop address is not aligned - 0x4f59e7c8
> 
> To alleviate this problem - the calloc()s have been replaced with
> malloc_cache_aligned() and memset().
> 
> After those changes the buffers are properly aligned (with both start
> address and size) to SoC cache line.
> 
> Fixes: 09fa964bba80 ("fs/fat: Fix 'CACHE: Misaligned operation at range' warnings")
> Suggested-by: Lukasz Majewski <lukma at denx.de>
> Signed-off-by: Neil Armstrong <narmstrong at baylibre.com>
> Reviewed-by: Lukasz Majewski <lukma at denx.de>
> Reviewed-by: Fabio Estevam <fabio.estevam at nxp.com>

Applied to u-boot/master, thanks!

-- 
Tom
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