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authorRoger Quadros <rogerq@ti.com>2014-09-23 18:07:01 +0300
committerTom Rini <trini@ti.com>2014-10-10 09:44:41 -0400
commit02590aa31cc282cffafac559032981094f716fa9 (patch)
tree5c7bf6bad027640e56c3f071a1f27041427780fb /drivers/block
parent115e71f7da1f6fd96c20793842f5751897d9fdee (diff)
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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>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/ahci.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/block/ahci.c b/drivers/block/ahci.c
index dce99ad..a93a8e1 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);