[U-Boot] [PATCH] ahci: flush dcache before issuing command

[yuantian.tang at nxp.com]

From: Tang Yuantian <Yuantian.Tang at nxp.com>

Ensure data the following sata command used is flushed out of dcache
and written to physical memory or timeout error may happen.

Signed-off-by: Tang Yuantian <yuantian.tang at nxp.com>
---
 drivers/block/ahci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/block/ahci.c b/drivers/block/ahci.c
index d29642b..e3e783a 100644
--- a/drivers/block/ahci.c
+++ b/drivers/block/ahci.c
@@ -1061,6 +1061,7 @@ static int ata_io_flush(u8 port)
 
 	memcpy((unsigned char *)pp->cmd_tbl, fis, 20);
 	ahci_fill_cmd_slot(pp, cmd_fis_len);
+	ahci_dcache_flush_sata_cmd(pp);
 	writel_with_flush(1, port_mmio + PORT_CMD_ISSUE);
 
 	if (waiting_for_cmd_completed(port_mmio + PORT_CMD_ISSUE,
-- 
2.1.0.27.g96db324