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| author | Ajay Agarwal <ajayagarwal@google.com> | 2023-04-12 15:04:25 +0530 |
|---|---|---|
| committer | Lorenzo Pieralisi <lpieralisi@kernel.org> | 2023-05-26 10:45:12 +0200 |
| commit | da56a1bfbab55189595e588f1d984bdfb5cf5924 (patch) | |
| tree | 3b6bc5e11ca564f1349019af3e3d688da6866b70 /drivers/pci/controller/dwc/pcie-designware.h | |
| parent | ac9a78681b921877518763ba0e89202254349d1b (diff) | |
| download | linux-da56a1bfbab55189595e588f1d984bdfb5cf5924.tar.gz linux-da56a1bfbab55189595e588f1d984bdfb5cf5924.tar.bz2 linux-da56a1bfbab55189595e588f1d984bdfb5cf5924.zip | |
PCI: dwc: Wait for link up only if link is started
In dw_pcie_host_init() regardless of whether the link has been
started or not, the code waits for the link to come up. Even in
cases where start_link() is not defined the code ends up spinning
in a loop for 1 second. Since in some systems dw_pcie_host_init()
gets called during probe, this one second loop for each pcie
interface instance ends up extending the boot time.
Wait for the link up in only if the start_link() is defined.
Link: https://lore.kernel.org/r/20230412093425.3659088-1-ajayagarwal@google.com
Tested-by: Will McVicker <willmcvicker@google.com>
Signed-off-by: Sajid Dalvi <sdalvi@google.com>
Signed-off-by: Ajay Agarwal <ajayagarwal@google.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Diffstat (limited to 'drivers/pci/controller/dwc/pcie-designware.h')
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-designware.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index 79713ce075cc..615660640801 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -429,6 +429,7 @@ void dw_pcie_setup(struct dw_pcie *pci); void dw_pcie_iatu_detect(struct dw_pcie *pci); int dw_pcie_edma_detect(struct dw_pcie *pci); void dw_pcie_edma_remove(struct dw_pcie *pci); +void dw_pcie_print_link_status(struct dw_pcie *pci); static inline void dw_pcie_writel_dbi(struct dw_pcie *pci, u32 reg, u32 val) { |