PCI: dwc: Wait for link up only if link is started

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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>

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This commit is contained in:

Ajay Agarwal 2023-04-12 15:04:25 +05:30 • committed by Lorenzo Pieralisi

parent ac9a78681b

commit da56a1bfba

3 changed files with 23 additions and 11 deletions

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13

drivers/pci/controller/dwc/pcie-designware-host.c

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20

drivers/pci/controller/dwc/pcie-designware.c

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1

drivers/pci/controller/dwc/pcie-designware.h

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