From 75e14b1ac87564f1f2f7401828c3fefd316e818f Mon Sep 17 00:00:00 2001 From: Tang Yuantian Date: Thu, 14 Apr 2016 16:21:00 +0800 Subject: [PATCH] ahci: flush dcache before issuing command 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 --- drivers/block/ahci.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/block/ahci.c b/drivers/block/ahci.c index d29642be77..e3e783a74c 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, -- 2.39.5