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| author | Stefan Agner <stefan.agner@toradex.com> | 2017-08-23 09:37:56 -0700 |
|---|---|---|
| committer | Stefan Agner <stefan.agner@toradex.com> | 2017-08-31 19:57:39 -0700 |
| commit | 16d2bc5503aab2d087c1e48c888a1307a7a86270 (patch) | |
| tree | ef92d28d0a9993261aff57590869246ffe0b8a90 | |
| parent | 8215b596c0b27598a8a36b82bc70b5e0202c3a90 (diff) | |
disk: part: align buffer so it can be used with DMA enabled drivers
When using ISO partitions with a DMA enabled block device driver
reading the ISO partition leads to unaligned DMA operations:
CACHE: Misaligned operation at range [bffb7da8, bffb85a8]
Align the buffer to make sure we pass a buffer which works for
DMA operations.
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
| -rw-r--r-- | disk/part_iso.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/disk/part_iso.c b/disk/part_iso.c index bb8ed658f2..8aef251f4e 100644 --- a/disk/part_iso.c +++ b/disk/part_iso.c @@ -24,7 +24,7 @@ #undef CHECK_FOR_POWERPC_PLATTFORM #define CD_SECTSIZE 2048 -static unsigned char tmpbuf[CD_SECTSIZE]; +static unsigned char tmpbuf[CD_SECTSIZE] __aligned(ARCH_DMA_MINALIGN); unsigned long iso_dread(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt, void *buffer) |