[PATCH v4 03/19] fpga: dfl: afu: use parent device to log errors on port enable/disable

[Peter Colberg <peter.colberg@intel.com>]

AFU port enable/disable may be triggered from userspace at any point,
e.g., after a port has been released. This commit prepares a subsequent
commit that destroys the port platform device on port release, which is
then no longer available during port enable/disable. Use the parent,
physical DFL, e.g., PCIe FPGA device instead for logging errors.

Signed-off-by: Peter Colberg <peter.colberg@intel.com>
Reviewed-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Reviewed-by: Basheer Ahmed Muddebihal <basheer.ahmed.muddebihal@linux.intel.com>
---
Changes since v3:
- Replace "physical" with "physical DFL" (device) in description for
  consistency with other patches.

Changes since v2:
- New patch extracted from monolithic v1 patch.
---
 drivers/fpga/dfl-afu-main.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c
index 6125e2faada8..c0f2db72b5b9 100644
--- a/drivers/fpga/dfl-afu-main.c
+++ b/drivers/fpga/dfl-afu-main.c
@@ -60,7 +60,8 @@ int __afu_port_enable(struct platform_device *pdev)
 	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, failure to enable device\n");
+		dev_err(pdata->dfl_cdev->parent,
+			"timeout, failure to enable device\n");
 		return -ETIMEDOUT;
 	}
 
@@ -99,7 +100,8 @@ int __afu_port_disable(struct platform_device *pdev)
 	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, failure to disable device\n");
+		dev_err(pdata->dfl_cdev->parent,
+			"timeout, failure to disable device\n");
 		return -ETIMEDOUT;
 	}
 
-- 
2.47.0