From 02590aa31cc282cffafac559032981094f716fa9 Mon Sep 17 00:00:00 2001 From: Roger Quadros <rogerq@ti.com> Date: Tue, 23 Sep 2014 18:07:01 +0300 Subject: [PATCH] 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 <rogerq@ti.com> --- drivers/block/ahci.c | 1 - 1 file changed, 1 deletion(-) 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); -- 2.39.5