sata: sata_mv: Fix misaligned cache warnings

This patch fixes the warnings about misaligned cache on Armada XP:

CACHE: Misaligned operation at range [7facb400, 7facb460]

Signed-off-by: Stefan Roese <sr@denx.de>

diff --git a/drivers/block/sata_mv.c b/drivers/block/sata_mv.c
index 414d2dc464f1e71741abd672ecd2d4dd20ba90fd..78e3da442d0fed830bcb416ef37a2aa99562b140 100644 (file)
--- a/drivers/block/sata_mv.c
+++ b/drivers/block/sata_mv.c
@@ -572,6 +572,7 @@ static int mv_ata_exec_ata_cmd(int port, struct sata_fis_h2d *cfis,
        struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv;
        struct crqb *req;
        int slot;
+       u32 start;
 
        if (len >= 64 * 1024) {
                printf("We only support <64K transfers for now\n");
@@ -628,7 +629,9 @@ static int mv_ata_exec_ata_cmd(int port, struct sata_fis_h2d *cfis,
                CRQB_SECTCOUNT_COUNT_EXP_MASK;
 
        /* Flush data */
-       flush_dcache_range((u32)req, (u32)req + sizeof(*req));
+       start = (u32)req & ~(ARCH_DMA_MINALIGN - 1);
+       flush_dcache_range(start,
+                          start + ALIGN(sizeof(*req), ARCH_DMA_MINALIGN));
 
        /* Trigger operation */
        slot = get_next_reqip(port);
@@ -643,8 +646,11 @@ static int mv_ata_exec_ata_cmd(int port, struct sata_fis_h2d *cfis,
        process_responses(port);
 
        /* Invalidate data on read */
-       if (buffer && len)
-               invalidate_dcache_range((u32)buffer, (u32)buffer + len);
+       if (buffer && len) {
+               start = (u32)buffer & ~(ARCH_DMA_MINALIGN - 1);
+               invalidate_dcache_range(start,
+                                       start + ALIGN(len, ARCH_DMA_MINALIGN));
+       }
 
        return len;
 }