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SubjectRe: [PATCH v9 1/8] PCI: Add pcie_reset_flr to follow calling convention of other reset methods
On 21/07/05 07:51PM, Amey Narkhede wrote:
> Add has_pcie_flr bitfield in struct pci_dev to indicate support for PCIe
> FLR to avoid reading PCI_EXP_DEVCAP multiple times.
>
> Currently there is separate function pcie_has_flr() to probe if PCIe FLR
> is supported by the device which does not match the calling convention
> followed by reset methods which use second function argument to decide
> whether to probe or not. Add new function pcie_reset_flr() that follows
> the calling convention of reset methods.
>
> Signed-off-by: Amey Narkhede <ameynarkhede03@gmail.com>
> ---
> drivers/crypto/cavium/nitrox/nitrox_main.c | 4 +-
> drivers/pci/pci.c | 59 +++++++++++-----------
> drivers/pci/pcie/aer.c | 12 ++---
> drivers/pci/probe.c | 6 ++-
> drivers/pci/quirks.c | 9 ++--
> include/linux/pci.h | 3 +-
> 6 files changed, 45 insertions(+), 48 deletions(-)
>
> diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
[...]
> index 3a62d09b8..a95252113 100644
> --- a/drivers/pci/probe.c
> +++ b/drivers/pci/probe.c
> @@ -1487,6 +1487,7 @@ void set_pcie_port_type(struct pci_dev *pdev)
> {
> int pos;
> u16 reg16;
> + u32 reg32;
> int type;
> struct pci_dev *parent;
>
> @@ -1497,8 +1498,9 @@ void set_pcie_port_type(struct pci_dev *pdev)
> pdev->pcie_cap = pos;
> pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, &reg16);
> pdev->pcie_flags_reg = reg16;
> - pci_read_config_word(pdev, pos + PCI_EXP_DEVCAP, &reg16);
> - pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD;
> + pci_read_config_dword(pdev, pos + PCI_EXP_DEVCAP, &reg32);
> + pdev->pcie_mpss = reg32 & PCI_EXP_DEVCAP_PAYLOAD;
> + pdev->has_pcie_flr = reg32 & PCI_EXP_DEVCAP_FLR ? 1 : 0;
On the side note, removing ternary here as Alex suggested doesn't work
for some reason.
[...]

Thanks,
Amey

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