diff mbox series

[v2,3/6] xen/pci: Drop some checks that are always true

Message ID 20210803100150.1543597-4-u.kleine-koenig@pengutronix.de
State New
Headers show
Series PCI: Drop duplicated tracking of a pci_dev's bound driver | expand

Commit Message

Uwe Kleine-König Aug. 3, 2021, 10:01 a.m. UTC 
pcifront_common_process() has a check at the start that exits early if
pcidev or pdidev->driver are NULL. So simplify the following code by not
checking these two again.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 drivers/pci/xen-pcifront.c | 57 +++++++++++++++++---------------------
 1 file changed, 25 insertions(+), 32 deletions(-)

Comments

Boris Ostrovsky Aug. 3, 2021, 1:50 p.m. UTC | #1 
On 8/3/21 6:01 AM, Uwe Kleine-König wrote:
> pcifront_common_process() has a check at the start that exits early if
> pcidev or pdidev->driver are NULL. So simplify the following code by not
> checking these two again.
>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
> ---
>  drivers/pci/xen-pcifront.c | 57 +++++++++++++++++---------------------
>  1 file changed, 25 insertions(+), 32 deletions(-)


Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
diff mbox series

Patch

diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c
index b7a8f3a1921f..3c648e6cb8f8 100644
--- a/drivers/pci/xen-pcifront.c
+++ b/drivers/pci/xen-pcifront.c
@@ -591,7 +591,6 @@  static pci_ers_result_t pcifront_common_process(int cmd,
 	int devfn = pdev->sh_info->aer_op.devfn;
 	int domain = pdev->sh_info->aer_op.domain;
 	struct pci_dev *pcidev;
-	int flag = 0;
 
 	dev_dbg(&pdev->xdev->dev,
 		"pcifront AER process: cmd %x (bus:%x, devfn%x)",
@@ -606,40 +605,34 @@  static pci_ers_result_t pcifront_common_process(int cmd,
 	}
 	pdrv = pcidev->driver;
 
-	if (pdrv) {
-		if (pdrv->err_handler && pdrv->err_handler->error_detected) {
-			pci_dbg(pcidev, "trying to call AER service\n");
-			if (pcidev) {
-				flag = 1;
-				switch (cmd) {
-				case XEN_PCI_OP_aer_detected:
-					result = pdrv->err_handler->
-						 error_detected(pcidev, state);
-					break;
-				case XEN_PCI_OP_aer_mmio:
-					result = pdrv->err_handler->
-						 mmio_enabled(pcidev);
-					break;
-				case XEN_PCI_OP_aer_slotreset:
-					result = pdrv->err_handler->
-						 slot_reset(pcidev);
-					break;
-				case XEN_PCI_OP_aer_resume:
-					pdrv->err_handler->resume(pcidev);
-					break;
-				default:
-					dev_err(&pdev->xdev->dev,
-						"bad request in aer recovery "
-						"operation!\n");
-
-				}
-			}
+	if (pdrv->err_handler && pdrv->err_handler->error_detected) {
+		pci_dbg(pcidev, "trying to call AER service\n");
+		switch (cmd) {
+		case XEN_PCI_OP_aer_detected:
+			result = pdrv->err_handler->
+				 error_detected(pcidev, state);
+			break;
+		case XEN_PCI_OP_aer_mmio:
+			result = pdrv->err_handler->
+				 mmio_enabled(pcidev);
+			break;
+		case XEN_PCI_OP_aer_slotreset:
+			result = pdrv->err_handler->
+				 slot_reset(pcidev);
+			break;
+		case XEN_PCI_OP_aer_resume:
+			pdrv->err_handler->resume(pcidev);
+			break;
+		default:
+			dev_err(&pdev->xdev->dev,
+				"bad request in aer recovery "
+				"operation!\n");
 		}
+
+		return result;
 	}
-	if (!flag)
-		result = PCI_ERS_RESULT_NONE;
 
-	return result;
+	return PCI_ERS_RESULT_NONE;
 }