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PCI: hotplug: Use FIELD_GET/PREP()

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Instead of handcrafted shifts to handle register fields, use
FIELD_GET/FIELD_PREP().

Link: https://lore.kernel.org/r/20231018113254.17616-4-ilpo.jarvinen@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Ilpo Järvinen 2023-10-18 14:32:50 +03:00 committed by Bjorn Helgaas
parent 92af77ca26
commit abaaac4845
3 changed files with 7 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/pci/hotplug/pciehp_core.c
View File

@ -20,6 +20,7 @@
#define pr_fmt(fmt) "pciehp: " fmt
#define dev_fmt pr_fmt
#include <linux/bitfield.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/slab.h>
@ -103,7 +104,7 @@ static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
struct pci_dev *pdev = ctrl->pcie->port;
if (status)
status <<= PCI_EXP_SLTCTL_ATTN_IND_SHIFT;
status = FIELD_PREP(PCI_EXP_SLTCTL_AIC, status);
else
status = PCI_EXP_SLTCTL_ATTN_IND_OFF;

5
drivers/pci/hotplug/pciehp_hpc.c
View File

@ -14,6 +14,7 @@
#define dev_fmt(fmt) "pciehp: " fmt
#include <linux/bitfield.h>
#include <linux/dmi.h>
#include <linux/kernel.h>
#include <linux/types.h>
@ -484,7 +485,7 @@ int pciehp_set_raw_indicator_status(struct hotplug_slot *hotplug_slot,
struct pci_dev *pdev = ctrl_dev(ctrl);
pci_config_pm_runtime_get(pdev);
pcie_write_cmd_nowait(ctrl, status << 6,
pcie_write_cmd_nowait(ctrl, FIELD_PREP(PCI_EXP_SLTCTL_AIC, status),
PCI_EXP_SLTCTL_AIC | PCI_EXP_SLTCTL_PIC);
pci_config_pm_runtime_put(pdev);
return 0;
@ -1028,7 +1029,7 @@ struct controller *pcie_init(struct pcie_device *dev)
PCI_EXP_SLTSTA_DLLSC | PCI_EXP_SLTSTA_PDC);
ctrl_info(ctrl, "Slot #%d AttnBtn%c PwrCtrl%c MRL%c AttnInd%c PwrInd%c HotPlug%c Surprise%c Interlock%c NoCompl%c IbPresDis%c LLActRep%c%s\n",
(slot_cap & PCI_EXP_SLTCAP_PSN) >> 19,
FIELD_GET(PCI_EXP_SLTCAP_PSN, slot_cap),
FLAG(slot_cap, PCI_EXP_SLTCAP_ABP),
FLAG(slot_cap, PCI_EXP_SLTCAP_PCP),
FLAG(slot_cap, PCI_EXP_SLTCAP_MRLSP),

3
drivers/pci/hotplug/pnv_php.c
View File

@ -5,6 +5,7 @@
* Copyright Gavin Shan, IBM Corporation 2016.
*/
#include <linux/bitfield.h>
#include <linux/libfdt.h>
#include <linux/module.h>
#include <linux/pci.h>
@ -731,7 +732,7 @@ static int pnv_php_enable_msix(struct pnv_php_slot *php_slot)
/* Check hotplug MSIx entry is in range */
pcie_capability_read_word(pdev, PCI_EXP_FLAGS, &pcie_flag);
entry.entry = (pcie_flag & PCI_EXP_FLAGS_IRQ) >> 9;
entry.entry = FIELD_GET(PCI_EXP_FLAGS_IRQ, pcie_flag);
if (entry.entry >= nr_entries)
return -ERANGE;