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| author | Heiner Kallweit <hkallweit1@gmail.com> | 2021-01-24 18:39:32 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-04 11:39:48 +0300 |
| commit | 68e1f776a739931b8e78c1bb07470303ef8a96f8 (patch) | |
| tree | a43330903bb2ffda82124c720ac56f014ce5db68 /drivers/pci/syscall.c | |
| parent | bca5a72d1f9459b2162d7aee7a8e48c9c6d03b27 (diff) | |
| download | linux-68e1f776a739931b8e78c1bb07470303ef8a96f8.tar.xz | |
PCI: Align checking of syscall user config accessors
[ Upstream commit ef9e4005cbaf022c6251263aa27836acccaef65d ]
After 34e3207205ef ("PCI: handle positive error codes"),
pci_user_read_config_*() and pci_user_write_config_*() return 0 or negative
errno values, not PCIBIOS_* values like PCIBIOS_SUCCESSFUL or
PCIBIOS_BAD_REGISTER_NUMBER.
Remove comparisons with PCIBIOS_SUCCESSFUL and check only for non-zero. It
happens that PCIBIOS_SUCCESSFUL is zero, so this is not a functional
change, but it aligns this code with the user accessors.
[bhelgaas: commit log]
Fixes: 34e3207205ef ("PCI: handle positive error codes")
Link: https://lore.kernel.org/r/f1220314-e518-1e18-bf94-8e6f8c703758@gmail.com
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/pci/syscall.c')
| -rw-r--r-- | drivers/pci/syscall.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/pci/syscall.c b/drivers/pci/syscall.c index d96626c614f5..a7bdd10fccf3 100644 --- a/drivers/pci/syscall.c +++ b/drivers/pci/syscall.c @@ -19,7 +19,7 @@ SYSCALL_DEFINE5(pciconfig_read, unsigned long, bus, unsigned long, dfn, u16 word; u32 dword; long err; - long cfg_ret; + int cfg_ret; if (!capable(CAP_SYS_ADMIN)) return -EPERM; @@ -45,7 +45,7 @@ SYSCALL_DEFINE5(pciconfig_read, unsigned long, bus, unsigned long, dfn, } err = -EIO; - if (cfg_ret != PCIBIOS_SUCCESSFUL) + if (cfg_ret) goto error; switch (len) { @@ -103,7 +103,7 @@ 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) err = -EIO; break; @@ -112,7 +112,7 @@ 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) err = -EIO; break; @@ -121,7 +121,7 @@ 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) err = -EIO; break; |