From: Matthew Gerlach matthew.gerlach@linux.intel.com
[ Upstream commit 8614afd689df59d9ce019439389be20bd788a897 ]
When putting the port in reset, driver must wait for the soft reset acknowledgment bit instead of the soft reset bit.
Fixes: 47c1b19c160f (fpga: dfl: afu: add port ops support) Signed-off-by: Matthew Gerlach matthew.gerlach@linux.intel.com Signed-off-by: Xu Yilun yilun.xu@intel.com Acked-by: Wu Hao hao.wu@intel.com Reviewed-by: Tom Rix trix@redhat.com Signed-off-by: Moritz Fischer mdf@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/fpga/dfl-afu-main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c index 02baa6a227c0c..fc048f9a99b19 100644 --- a/drivers/fpga/dfl-afu-main.c +++ b/drivers/fpga/dfl-afu-main.c @@ -79,7 +79,8 @@ static int port_disable(struct platform_device *pdev) * on this port and minimum soft reset pulse width has elapsed. * Driver polls port_soft_reset_ack to determine if reset done by HW. */ - if (readq_poll_timeout(base + PORT_HDR_CTRL, v, v & PORT_CTRL_SFTRST, + if (readq_poll_timeout(base + PORT_HDR_CTRL, v, + v & PORT_CTRL_SFTRST_ACK, RST_POLL_INVL, RST_POLL_TIMEOUT)) { dev_err(&pdev->dev, "timeout, fail to reset device\n"); return -ETIMEDOUT;