From: Roger Quadros Date: Tue, 23 Sep 2014 15:07:01 +0000 (+0300) Subject: ahci: Don't start command DMA engine before buffers are set X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=02590aa31cc282cffafac559032981094f716fa9;p=u-boot.git ahci: Don't start command DMA engine before buffers are set The DMA/FIS buffers are set in ahci_port_start() which is called after ahci_host_init(). So don't start the DMA engine here (i.e. don't set FIS_RX) This fixes the following error at kernel boot on OMAP platforms (e.g. DRA7x) WARNING: CPU: 0 PID: 0 at drivers/bus/omap_l3_noc.c:147 l3_interrupt_handler+0x260/0x358() 44000000.ocp:L3 Custom Error: MASTER SATA TARGET GPMC (Idle): Data Access in User mode during Functional access Signed-off-by: Roger Quadros --- diff --git a/drivers/block/ahci.c b/drivers/block/ahci.c index dce99adc6b..a93a8e1c04 100644 --- a/drivers/block/ahci.c +++ b/drivers/block/ahci.c @@ -229,7 +229,6 @@ static int ahci_host_init(struct ahci_probe_ent *probe_ent) * already be on in the command register. */ cmd = readl(port_mmio + PORT_CMD); - cmd |= PORT_CMD_FIS_RX; cmd |= PORT_CMD_SPIN_UP; writel_with_flush(cmd, port_mmio + PORT_CMD);