diff mbox series

[v4,3/3] e1000e: Use pcie_capability_read_word() for reading LNKSTA

Message ID 20231121123428.20907-4-ilpo.jarvinen@linux.intel.com
State New
Headers
Series net/ethernet/intel: PCI cleanups |

Commit Message

Ilpo Järvinen Nov. 21, 2023, 12:34 p.m. UTC 
  Use pcie_capability_read_word() for reading LNKSTA and remove the
custom define that matches to PCI_EXP_LNKSTA.

As only single user for cap_offset remains, replace it with a call to
pci_pcie_cap(). Instead of e1000_adapter, make local variable out of
pci_dev because both users are interested in it.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 drivers/net/ethernet/intel/e1000e/defines.h |  1 -
 drivers/net/ethernet/intel/e1000e/mac.c     | 11 ++++-------
 2 files changed, 4 insertions(+), 8 deletions(-)

Comments

Simon Horman Nov. 23, 2023, 11:58 a.m. UTC | #1 
On Tue, Nov 21, 2023 at 02:34:28PM +0200, Ilpo Järvinen wrote:
> Use pcie_capability_read_word() for reading LNKSTA and remove the
> custom define that matches to PCI_EXP_LNKSTA.
> 
> As only single user for cap_offset remains, replace it with a call to
> pci_pcie_cap(). Instead of e1000_adapter, make local variable out of
> pci_dev because both users are interested in it.
> 
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Reviewed-by: Simon Horman <horms@kernel.org>
naamax.meir Dec. 7, 2023, 12:53 p.m. UTC | #2 
On 11/21/2023 14:34, Ilpo Järvinen wrote:
> Use pcie_capability_read_word() for reading LNKSTA and remove the
> custom define that matches to PCI_EXP_LNKSTA.
> 
> As only single user for cap_offset remains, replace it with a call to
> pci_pcie_cap(). Instead of e1000_adapter, make local variable out of
> pci_dev because both users are interested in it.
> 
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> ---
>   drivers/net/ethernet/intel/e1000e/defines.h |  1 -
>   drivers/net/ethernet/intel/e1000e/mac.c     | 11 ++++-------
>   2 files changed, 4 insertions(+), 8 deletions(-)

Tested-by: Naama Meir <naamax.meir@linux.intel.com>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/e1000e/defines.h b/drivers/net/ethernet/intel/e1000e/defines.h
index a4d29c9e03a6..23a58cada43a 100644
--- a/drivers/net/ethernet/intel/e1000e/defines.h
+++ b/drivers/net/ethernet/intel/e1000e/defines.h
@@ -678,7 +678,6 @@ 
 
 /* PCI/PCI-X/PCI-EX Config space */
 #define PCI_HEADER_TYPE_REGISTER     0x0E
-#define PCIE_LINK_STATUS             0x12
 
 #define PCI_HEADER_TYPE_MULTIFUNC    0x80
 
diff --git a/drivers/net/ethernet/intel/e1000e/mac.c b/drivers/net/ethernet/intel/e1000e/mac.c
index 5340cf73778d..694a779e718d 100644
--- a/drivers/net/ethernet/intel/e1000e/mac.c
+++ b/drivers/net/ethernet/intel/e1000e/mac.c
@@ -17,16 +17,13 @@  s32 e1000e_get_bus_info_pcie(struct e1000_hw *hw)
 {
 	struct e1000_mac_info *mac = &hw->mac;
 	struct e1000_bus_info *bus = &hw->bus;
-	struct e1000_adapter *adapter = hw->adapter;
-	u16 pcie_link_status, cap_offset;
+	struct pci_dev *pdev = hw->adapter->pdev;
+	u16 pcie_link_status;
 
-	cap_offset = adapter->pdev->pcie_cap;
-	if (!cap_offset) {
+	if (!pci_pcie_cap(pdev)) {
 		bus->width = e1000_bus_width_unknown;
 	} else {
-		pci_read_config_word(adapter->pdev,
-				     cap_offset + PCIE_LINK_STATUS,
-				     &pcie_link_status);
+		pcie_capability_read_word(pdev, PCI_EXP_LNKSTA, &pcie_link_status);
 		bus->width = (enum e1000_bus_width)FIELD_GET(PCI_EXP_LNKSTA_NLW,
 							     pcie_link_status);
 	}