[RFC PATCH 07/35] PCI: Change PCIBIOS_SUCCESSFUL to 0

Saheed O. Bolarinwa
2020-07-13T13:25:08Z

In reference to the PCI spec (Chapter 2), PCIBIOS* is an x86 concept.
Their scope should be limited within arch/x86.

Change all PCIBIOS_SUCCESSFUL to 0

Signed-off-by: "Saheed O. Bolarinwa" <refactormyself@gmail.com>
---
drivers/pci/access.c | 14 +++++++-------
drivers/pci/pci-bridge-emul.c | 14 +++++++-------
drivers/pci/pci.c | 8 ++++----
drivers/pci/pcie/bw_notification.c | 4 ++--
drivers/pci/probe.c | 4 ++--
drivers/pci/quirks.c | 2 +-
drivers/pci/syscall.c | 8 ++++----
drivers/pci/xen-pcifront.c | 2 +-
8 files changed, 28 insertions(+), 28 deletions(-)

diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 79c4a2ef269a..b907abe38679 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -92,7 +92,7 @@ int pci_generic_config_read(struct pci_bus *bus, unsigned int devfn,
else
*val = readl(addr);

- return PCIBIOS_SUCCESSFUL;
+ return 0;
}
EXPORT_SYMBOL_GPL(pci_generic_config_read);

@@ -112,7 +112,7 @@ int pci_generic_config_write(struct pci_bus *bus, unsigned int devfn,
else
writel(val, addr);

- return PCIBIOS_SUCCESSFUL;
+ return 0;
}
EXPORT_SYMBOL_GPL(pci_generic_config_write);

@@ -132,7 +132,7 @@ int pci_generic_config_read32(struct pci_bus *bus, unsigned int devfn,
if (size <= 2)
*val = (*val >> (8 * (where & 3))) & ((1 << (size * 8)) - 1);

- return PCIBIOS_SUCCESSFUL;
+ return 0;
}
EXPORT_SYMBOL_GPL(pci_generic_config_read32);

@@ -148,7 +148,7 @@ int pci_generic_config_write32(struct pci_bus *bus, unsigned int devfn,

if (size == 4) {
writel(val, addr);
- return PCIBIOS_SUCCESSFUL;
+ return 0;
}

/*
@@ -169,7 +169,7 @@ int pci_generic_config_write32(struct pci_bus *bus, unsigned int devfn,
tmp |= val << ((where & 0x3) * 8);
writel(tmp, addr);

- return PCIBIOS_SUCCESSFUL;
+ return 0;
}
EXPORT_SYMBOL_GPL(pci_generic_config_write32);

@@ -222,7 +222,7 @@ static noinline void pci_wait_cfg(struct pci_dev *dev)
int pci_user_read_config_##size \
(struct pci_dev *dev, int pos, type *val) \
{ \
- int ret = PCIBIOS_SUCCESSFUL; \
+ int ret = 0; \
u32 data = -1; \
if (PCI_##size##_BAD) \
return -EINVAL; \
@@ -242,7 +242,7 @@ EXPORT_SYMBOL_GPL(pci_user_read_config_##size);
int pci_user_write_config_##size \
(struct pci_dev *dev, int pos, type val) \
{ \
- int ret = PCIBIOS_SUCCESSFUL; \
+ int ret = 0; \
if (PCI_##size##_BAD) \
return -EINVAL; \
raw_spin_lock_irq(&pci_lock); \
diff --git a/drivers/pci/pci-bridge-emul.c b/drivers/pci/pci-bridge-emul.c
index ccf26d12ec61..9695c453e197 100644
--- a/drivers/pci/pci-bridge-emul.c
+++ b/drivers/pci/pci-bridge-emul.c
@@ -323,12 +323,12 @@ int pci_bridge_emul_conf_read(struct pci_bridge_emul *bridge, int where,

if (bridge->has_pcie && reg >= PCI_CAP_PCIE_END) {
*value = 0;
- return PCIBIOS_SUCCESSFUL;
+ return 0;
}

if (!bridge->has_pcie && reg >= PCI_BRIDGE_CONF_END) {
*value = 0;
- return PCIBIOS_SUCCESSFUL;
+ return 0;
}

if (bridge->has_pcie && reg >= PCI_CAP_PCIE_START) {
@@ -364,7 +364,7 @@ int pci_bridge_emul_conf_read(struct pci_bridge_emul *bridge, int where,
else if (size != 4)
return PCIBIOS_BAD_REGISTER_NUMBER;

- return PCIBIOS_SUCCESSFUL;
+ return 0;
}

/*
@@ -383,10 +383,10 @@ int pci_bridge_emul_conf_write(struct pci_bridge_emul *bridge, int where,
const struct pci_bridge_reg_behavior *behavior;

if (bridge->has_pcie && reg >= PCI_CAP_PCIE_END)
- return PCIBIOS_SUCCESSFUL;
+ return 0;

if (!bridge->has_pcie && reg >= PCI_BRIDGE_CONF_END)
- return PCIBIOS_SUCCESSFUL;
+ return 0;

shift = (where & 0x3) * 8;

@@ -400,7 +400,7 @@ int pci_bridge_emul_conf_write(struct pci_bridge_emul *bridge, int where,
return PCIBIOS_BAD_REGISTER_NUMBER;

ret = pci_bridge_emul_conf_read(bridge, reg, 4, &old);
- if (ret != PCIBIOS_SUCCESSFUL)
+ if (ret != 0)
return ret;

if (bridge->has_pcie && reg >= PCI_CAP_PCIE_START) {
@@ -428,5 +428,5 @@ int pci_bridge_emul_conf_write(struct pci_bridge_emul *bridge, int where,
if (write_op)
write_op(bridge, reg, old, new, mask);

- return PCIBIOS_SUCCESSFUL;
+ return 0;
}
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index ce096272f52b..a74547861d5e 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -185,7 +185,7 @@ int pci_status_get_and_clear_errors(struct pci_dev *pdev)
int ret;

ret = pci_read_config_word(pdev, PCI_STATUS, &status);
- if (ret != PCIBIOS_SUCCESSFUL)
+ if (ret != 0)
return -EIO;

status &= PCI_STATUS_ERROR_BITS;
@@ -534,7 +534,7 @@ int pci_find_next_ext_capability(struct pci_dev *dev, int start, int cap)
if (start)
pos = start;

- if (pci_read_config_dword(dev, pos, &header) != PCIBIOS_SUCCESSFUL)
+ if (pci_read_config_dword(dev, pos, &header) != 0)
return 0;

/*
@@ -552,7 +552,7 @@ int pci_find_next_ext_capability(struct pci_dev *dev, int start, int cap)
if (pos < PCI_CFG_SPACE_SIZE)
break;

- if (pci_read_config_dword(dev, pos, &header) != PCIBIOS_SUCCESSFUL)
+ if (pci_read_config_dword(dev, pos, &header) != 0)
break;
}

@@ -628,7 +628,7 @@ static int __pci_find_next_ht_cap(struct pci_dev *dev, int pos, int ht_cap)
PCI_CAP_ID_HT, &ttl);
while (pos) {
rc = pci_read_config_byte(dev, pos + 3, &cap);
- if (rc != PCIBIOS_SUCCESSFUL)
+ if (rc != 0)
return 0;

if ((cap & mask) == ht_cap)
diff --git a/drivers/pci/pcie/bw_notification.c b/drivers/pci/pcie/bw_notification.c
index 77e685771487..c7201d886026 100644
--- a/drivers/pci/pcie/bw_notification.c
+++ b/drivers/pci/pcie/bw_notification.c
@@ -23,7 +23,7 @@ static bool pcie_link_bandwidth_notification_supported(struct pci_dev *dev)
u32 lnk_cap;

ret = pcie_capability_read_dword(dev, PCI_EXP_LNKCAP, &lnk_cap);
- return (ret == PCIBIOS_SUCCESSFUL) && (lnk_cap & PCI_EXP_LNKCAP_LBNC);
+ return (ret == 0) && (lnk_cap & PCI_EXP_LNKCAP_LBNC);
}

static void pcie_enable_link_bandwidth_notification(struct pci_dev *dev)
@@ -56,7 +56,7 @@ static irqreturn_t pcie_bw_notification_irq(int irq, void *context)
ret = pcie_capability_read_word(port, PCI_EXP_LNKSTA, &link_status);
events = link_status & PCI_EXP_LNKSTA_LBMS;

- if (ret != PCIBIOS_SUCCESSFUL || !events)
+ if (ret != 0 || !events)
return IRQ_NONE;

pcie_capability_write_word(port, PCI_EXP_LNKSTA, events);
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 2f66988cea25..ab7e19882b30 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1582,7 +1582,7 @@ static bool pci_ext_cfg_is_aliased(struct pci_dev *dev)

for (pos = PCI_CFG_SPACE_SIZE;
pos < PCI_CFG_SPACE_EXP_SIZE; pos += PCI_CFG_SPACE_SIZE) {
- if (pci_read_config_dword(dev, pos, &tmp) != PCIBIOS_SUCCESSFUL
+ if (pci_read_config_dword(dev, pos, &tmp) != 0
|| header != tmp)
return false;
}
@@ -1609,7 +1609,7 @@ static int pci_cfg_space_size_ext(struct pci_dev *dev)
u32 status;
int pos = PCI_CFG_SPACE_SIZE;

- if (pci_read_config_dword(dev, pos, &status) != PCIBIOS_SUCCESSFUL)
+ if (pci_read_config_dword(dev, pos, &status) != 0)
return PCI_CFG_SPACE_SIZE;
if (status == 0xffffffff || pci_ext_cfg_is_aliased(dev))
return PCI_CFG_SPACE_SIZE;
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 812bfc32ecb8..e60ef8abd698 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -5117,7 +5117,7 @@ static void quirk_intel_qat_vf_cap(struct pci_dev *pdev)

pdev->cfg_size = PCI_CFG_SPACE_EXP_SIZE;
if (pci_read_config_dword(pdev, PCI_CFG_SPACE_SIZE, &status) !=
- PCIBIOS_SUCCESSFUL || (status == 0xffffffff))
+ 0 || (status == 0xffffffff))
pdev->cfg_size = PCI_CFG_SPACE_SIZE;

if (pci_find_saved_cap(pdev, PCI_CAP_ID_EXP))
diff --git a/drivers/pci/syscall.c b/drivers/pci/syscall.c
index 31e39558d49d..7d45b58beacd 100644
--- a/drivers/pci/syscall.c
+++ b/drivers/pci/syscall.c
@@ -46,7 +46,7 @@ SYSCALL_DEFINE5(pciconfig_read, unsigned long, bus, unsigned long, dfn,
}

err = -EIO;
- if (cfg_ret != PCIBIOS_SUCCESSFUL)
+ if (cfg_ret != 0)
goto error;

switch (len) {
@@ -105,7 +105,7 @@ SYSCALL_DEFINE5(pciconfig_write, unsigned long, bus, unsigned long, dfn,
if (err)
break;
err = pci_user_write_config_byte(dev, off, byte);
- if (err != PCIBIOS_SUCCESSFUL)
+ if (err != 0)
err = -EIO;
break;

@@ -114,7 +114,7 @@ SYSCALL_DEFINE5(pciconfig_write, unsigned long, bus, unsigned long, dfn,
if (err)
break;
err = pci_user_write_config_word(dev, off, word);
- if (err != PCIBIOS_SUCCESSFUL)
+ if (err != 0)
err = -EIO;
break;

@@ -123,7 +123,7 @@ SYSCALL_DEFINE5(pciconfig_write, unsigned long, bus, unsigned long, dfn,
if (err)
break;
err = pci_user_write_config_dword(dev, off, dword);
- if (err != PCIBIOS_SUCCESSFUL)
+ if (err != 0)
err = -EIO;
break;

diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c
index fab267e359e7..f63623b683ad 100644
--- a/drivers/pci/xen-pcifront.c
+++ b/drivers/pci/xen-pcifront.c
@@ -81,7 +81,7 @@ static int errno_to_pcibios_err(int errno)
{
switch (errno) {
case XEN_PCI_ERR_success:
- return PCIBIOS_SUCCESSFUL;
+ return 0;

case XEN_PCI_ERR_dev_not_found:
return PCIBIOS_DEVICE_NOT_FOUND;
--
2.18.2