lkml.org 
[lkml]   [2017]   [Nov]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH V2 4/7] PCI: wait device ready after pci_pm_reset()
Date
Rev 3.1 Sec 2.3.1 Request Handling Rules says a device can issue CRS
following a D3hot->D0 transition. Add pci_dev_wait() call to see if
device is available before returning.

Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
---
drivers/pci/pci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index ed3c3bc..87e4688 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -3990,7 +3990,7 @@ static int pci_pm_reset(struct pci_dev *dev, int probe)
pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, csr);
pci_dev_d3_sleep(dev);

- return 0;
+ return pci_dev_wait(dev, "PM D3->D0", PCIE_RESET_READY_POLL_MS);
}

void pci_reset_secondary_bus(struct pci_dev *dev)
--
1.9.1
\
 
 \ /
  Last update: 2017-11-27 07:22    [W:3.163 / U:0.060 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site