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powerpc/eeh: Remove unused return path from eeh_pe_dev_traverse() 

There are no users of the early-out return value from
eeh_pe_dev_traverse(), so remove it.

Signed-off-by: Sam Bobroff <sbobroff@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/c648070f5b28fe8ca1880b48e64b267959ffd369.1565930772.git.sbobroff@linux.ibm.com
This commit is contained in:
Sam Bobroff 2019-08-16 14:48:15 +10:00 committed by Michael Ellerman
parent 2e25505147
commit cef50c67c1
4 changed files with 26 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/powerpc/include/asm/eeh.h
View File

@ -260,7 +260,7 @@ static inline bool eeh_state_active(int state)
== (EEH_STATE_MMIO_ACTIVE | EEH_STATE_DMA_ACTIVE);
}
typedef void *(*eeh_edev_traverse_func)(struct eeh_dev *edev, void *flag);
typedef void (*eeh_edev_traverse_func)(struct eeh_dev *edev, void *flag);
typedef void *(*eeh_pe_traverse_func)(struct eeh_pe *pe, void *flag);
void eeh_set_pe_aux_size(int size);
int eeh_phb_pe_create(struct pci_controller *phb);
@ -274,8 +274,8 @@ int eeh_rmv_from_parent_pe(struct eeh_dev *edev);
void eeh_pe_update_time_stamp(struct eeh_pe *pe);
void *eeh_pe_traverse(struct eeh_pe *root,
eeh_pe_traverse_func fn, void *flag);
void *eeh_pe_dev_traverse(struct eeh_pe *root,
eeh_edev_traverse_func fn, void *flag);
void eeh_pe_dev_traverse(struct eeh_pe *root,
eeh_edev_traverse_func fn, void *flag);
void eeh_pe_restore_bars(struct eeh_pe *pe);
const char *eeh_pe_loc_get(struct eeh_pe *pe);
struct pci_bus *eeh_pe_bus_get(struct eeh_pe *pe);

16
arch/powerpc/kernel/eeh.c
View File

@ -705,7 +705,7 @@ int eeh_pci_enable(struct eeh_pe *pe, int function)
return rc;
}
static void *eeh_disable_and_save_dev_state(struct eeh_dev *edev,
static void eeh_disable_and_save_dev_state(struct eeh_dev *edev,
void *userdata)
{
struct pci_dev *pdev = eeh_dev_to_pci_dev(edev);
@ -716,7 +716,7 @@ static void *eeh_disable_and_save_dev_state(struct eeh_dev *edev,
* state for the specified device
*/
if (!pdev || pdev == dev)
return NULL;
return;
/* Ensure we have D0 power state */
pci_set_power_state(pdev, PCI_D0);
@ -729,18 +729,16 @@ static void *eeh_disable_and_save_dev_state(struct eeh_dev *edev,
* interrupt from the device
*/
pci_write_config_word(pdev, PCI_COMMAND, PCI_COMMAND_INTX_DISABLE);
return NULL;
}
static void *eeh_restore_dev_state(struct eeh_dev *edev, void *userdata)
static void eeh_restore_dev_state(struct eeh_dev *edev, void *userdata)
{
struct pci_dn *pdn = eeh_dev_to_pdn(edev);
struct pci_dev *pdev = eeh_dev_to_pci_dev(edev);
struct pci_dev *dev = userdata;
if (!pdev)
return NULL;
return;
/* Apply customization from firmware */
if (pdn && eeh_ops->restore_config)
@ -749,8 +747,6 @@ static void *eeh_restore_dev_state(struct eeh_dev *edev, void *userdata)
/* The caller should restore state for the specified device */
if (pdev != dev)
pci_restore_state(pdev);
return NULL;
}
int eeh_restore_vf_config(struct pci_dn *pdn)
@ -876,7 +872,7 @@ int pcibios_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state stat
* the indicated device and its children so that the bunch of the
* devices could be reset properly.
*/
static void *eeh_set_dev_freset(struct eeh_dev *edev, void *flag)
static void eeh_set_dev_freset(struct eeh_dev *edev, void *flag)
{
struct pci_dev *dev;
unsigned int *freset = (unsigned int *)flag;
@ -884,8 +880,6 @@ static void *eeh_set_dev_freset(struct eeh_dev *edev, void *flag)
dev = eeh_dev_to_pci_dev(edev);
if (dev)
*freset |= dev->needs_freset;
return NULL;
}
static void eeh_pe_refreeze_passed(struct eeh_pe *root)

26
arch/powerpc/kernel/eeh_driver.c
View File

@ -197,12 +197,12 @@ static void eeh_enable_irq(struct eeh_dev *edev)
}
}
static void *eeh_dev_save_state(struct eeh_dev *edev, void *userdata)
static void eeh_dev_save_state(struct eeh_dev *edev, void *userdata)
{
struct pci_dev *pdev;
if (!edev)
return NULL;
return;
/*
* We cannot access the config space on some adapters.
@ -212,14 +212,13 @@ static void *eeh_dev_save_state(struct eeh_dev *edev, void *userdata)
* device is created.
*/
if (edev->pe && (edev->pe->state & EEH_PE_CFG_RESTRICTED))
return NULL;
return;
pdev = eeh_dev_to_pci_dev(edev);
if (!pdev)
return NULL;
return;
pci_save_state(pdev);
return NULL;
}
static void eeh_set_channel_state(struct eeh_pe *root, enum pci_channel_state s)
@ -385,12 +384,12 @@ static enum pci_ers_result eeh_report_reset(struct eeh_dev *edev,
return driver->err_handler->slot_reset(pdev);
}
static void *eeh_dev_restore_state(struct eeh_dev *edev, void *userdata)
static void eeh_dev_restore_state(struct eeh_dev *edev, void *userdata)
{
struct pci_dev *pdev;
if (!edev)
return NULL;
return;
/*
* The content in the config space isn't saved because
@ -402,15 +401,14 @@ static void *eeh_dev_restore_state(struct eeh_dev *edev, void *userdata)
if (list_is_last(&edev->entry, &edev->pe->edevs))
eeh_pe_restore_bars(edev->pe);
return NULL;
return;
}
pdev = eeh_dev_to_pci_dev(edev);
if (!pdev)
return NULL;
return;
pci_restore_state(pdev);
return NULL;
}
/**
@ -491,7 +489,7 @@ static void *eeh_add_virt_device(struct eeh_dev *edev)
return NULL;
}
static void *eeh_rmv_device(struct eeh_dev *edev, void *userdata)
static void eeh_rmv_device(struct eeh_dev *edev, void *userdata)
{
struct pci_driver *driver;
struct pci_dev *dev = eeh_dev_to_pci_dev(edev);
@ -506,7 +504,7 @@ static void *eeh_rmv_device(struct eeh_dev *edev, void *userdata)
*/
if (!eeh_edev_actionable(edev) ||
(dev->hdr_type == PCI_HEADER_TYPE_BRIDGE))
return NULL;
return;
if (rmv_data) {
driver = eeh_pcid_get(dev);
@ -515,7 +513,7 @@ static void *eeh_rmv_device(struct eeh_dev *edev, void *userdata)
driver->err_handler->error_detected &&
driver->err_handler->slot_reset) {
eeh_pcid_put(dev);
return NULL;
return;
}
eeh_pcid_put(dev);
}
@ -548,8 +546,6 @@ static void *eeh_rmv_device(struct eeh_dev *edev, void *userdata)
pci_stop_and_remove_bus_device(dev);
pci_unlock_rescan_remove();
}
return NULL;
}
static void *eeh_pe_detach_dev(struct eeh_pe *pe, void *userdata)

25
arch/powerpc/kernel/eeh_pe.c
View File

@ -231,29 +231,22 @@ void *eeh_pe_traverse(struct eeh_pe *root,
* The function is used to traverse the devices of the specified
* PE and its child PEs.
*/
void *eeh_pe_dev_traverse(struct eeh_pe *root,
void eeh_pe_dev_traverse(struct eeh_pe *root,
eeh_edev_traverse_func fn, void *flag)
{
struct eeh_pe *pe;
struct eeh_dev *edev, *tmp;
void *ret;
if (!root) {
pr_warn("%s: Invalid PE %p\n",
__func__, root);
return NULL;
return;
}
/* Traverse root PE */
eeh_for_each_pe(root, pe) {
eeh_pe_for_each_dev(pe, edev, tmp) {
ret = fn(edev, flag);
if (ret)
return ret;
}
}
return NULL;
eeh_for_each_pe(root, pe)
eeh_pe_for_each_dev(pe, edev, tmp)
fn(edev, flag);
}
/**
@ -602,13 +595,11 @@ void eeh_pe_mark_isolated(struct eeh_pe *root)
}
EXPORT_SYMBOL_GPL(eeh_pe_mark_isolated);
static void *__eeh_pe_dev_mode_mark(struct eeh_dev *edev, void *flag)
static void __eeh_pe_dev_mode_mark(struct eeh_dev *edev, void *flag)
{
int mode = *((int *)flag);
edev->mode |= mode;
return NULL;
}
/**
@ -827,7 +818,7 @@ static void eeh_restore_device_bars(struct eeh_dev *edev)
* the expansion ROM base address, the latency timer, and etc.
* from the saved values in the device node.
*/
static void *eeh_restore_one_device_bars(struct eeh_dev *edev, void *flag)
static void eeh_restore_one_device_bars(struct eeh_dev *edev, void *flag)
{
struct pci_dn *pdn = eeh_dev_to_pdn(edev);
@ -839,8 +830,6 @@ static void *eeh_restore_one_device_bars(struct eeh_dev *edev, void *flag)
if (eeh_ops->restore_config && pdn)
eeh_ops->restore_config(pdn);
return NULL;
}
/**