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| author | Luc Van Oostenryck <luc.vanoostenryck@gmail.com> | 2020-07-02 19:26:49 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2020-07-08 01:11:52 +0300 |
| commit | 16d79cd4e23b1964d36c041ab027505ceacbbeeb (patch) | |
| tree | 4c8ff0b08113aaafe4f55013a9843027535170be /drivers/pci | |
| parent | b3a9e3b9622ae10064826dccb4f7a52bd88c7407 (diff) | |
| download | linux-16d79cd4e23b1964d36c041ab027505ceacbbeeb.tar.xz | |
PCI: Use 'pci_channel_state_t' instead of 'enum pci_channel_state'
The method struct pci_error_handlers.error_detected() is defined and
documented as taking an 'enum pci_channel_state' for the second argument,
but most drivers use 'pci_channel_state_t' instead.
This 'pci_channel_state_t' is not a typedef for the enum but a typedef for
a bitwise type in order to have better/stricter typechecking.
Consolidate everything by using 'pci_channel_state_t' in the method's
definition, in the related helpers and in the drivers.
Enforce use of 'pci_channel_state_t' by replacing 'enum pci_channel_state'
with an anonymous 'enum'.
Note: Currently, from a typechecking point of view this patch changes
nothing because only the constants defined by the enum are bitwise, not the
enum itself (sparse doesn't have the notion of 'bitwise enum'). This may
change in some not too far future, hence the patch.
[bhelgaas: squash in
https://lore.kernel.org/r/20200702162651.49526-3-luc.vanoostenryck@gmail.com
https://lore.kernel.org/r/20200702162651.49526-4-luc.vanoostenryck@gmail.com]
Link: https://lore.kernel.org/r/20200702162651.49526-2-luc.vanoostenryck@gmail.com
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pci.h | 2 | ||||
| -rw-r--r-- | drivers/pci/pcie/err.c | 4 | ||||
| -rw-r--r-- | drivers/pci/pcie/portdrv_pci.c | 2 |
3 files changed, 4 insertions, 4 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 6d3f75867106..c6c0c455f59f 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -555,7 +555,7 @@ static inline int pci_dev_specific_disable_acs_redir(struct pci_dev *dev) /* PCI error reporting and recovery */ pci_ers_result_t pcie_do_recovery(struct pci_dev *dev, - enum pci_channel_state state, + pci_channel_state_t state, pci_ers_result_t (*reset_link)(struct pci_dev *pdev)); bool pcie_wait_for_link(struct pci_dev *pdev, bool active); diff --git a/drivers/pci/pcie/err.c b/drivers/pci/pcie/err.c index 14bb8f54723e..467686ee2d8b 100644 --- a/drivers/pci/pcie/err.c +++ b/drivers/pci/pcie/err.c @@ -46,7 +46,7 @@ static pci_ers_result_t merge_result(enum pci_ers_result orig, } static int report_error_detected(struct pci_dev *dev, - enum pci_channel_state state, + pci_channel_state_t state, enum pci_ers_result *result) { pci_ers_result_t vote; @@ -147,7 +147,7 @@ out: } pci_ers_result_t pcie_do_recovery(struct pci_dev *dev, - enum pci_channel_state state, + pci_channel_state_t state, pci_ers_result_t (*reset_link)(struct pci_dev *pdev)) { pci_ers_result_t status = PCI_ERS_RESULT_CAN_RECOVER; diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index 3acf151ae015..3a3ce40ae1ab 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -146,7 +146,7 @@ static void pcie_portdrv_remove(struct pci_dev *dev) } static pci_ers_result_t pcie_portdrv_error_detected(struct pci_dev *dev, - enum pci_channel_state error) + pci_channel_state_t error) { /* Root Port has no impact. Always recovers. */ return PCI_ERS_RESULT_CAN_RECOVER; |