From: Luca Coelho <luciano.coelho@xxxxxxxxx>
The iwlwifi driver has a workaround for some PCI bugs that require it
to be removed and reinserted. Unfortunately, this doesn'w work on
kernels < 3.14, so ignore the actual work function in that case and
print out a message instead.
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
---
patches/iwlwifi-pci-device-removal.patch | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
create mode 100644 patches/iwlwifi-pci-device-removal.patch
diff --git a/patches/iwlwifi-pci-device-removal.patch b/patches/iwlwifi-pci-device-removal.patch
new file mode 100644
index 000000000000..c72cd09f4634
--- /dev/null
+++ b/patches/iwlwifi-pci-device-removal.patch
@@ -0,0 +1,24 @@
+diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+index 7229991ae70d..d77d0aa3bf7b 100644
+--- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
++++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+@@ -1946,6 +1946,11 @@ static void iwl_trans_pcie_removal_wk(struct work_struct *wk)
+ struct iwl_trans_pcie_removal *removal =
+ container_of(wk, struct iwl_trans_pcie_removal, work);
+ struct pci_dev *pdev = removal->pdev;
++#if LINUX_VERSION_IS_LESS(3,14,0)
++ dev_err(&rescan->pdev->dev,
++ "Device disconnected - can't rescan on old kernels.\n");
++ pci_dev_put(pdev);
++#else
+ char *prop[] = {"EVENT=INACCESSIBLE", NULL};
+
+ dev_err(&pdev->dev, "Device gone - attempting removal\n");
+@@ -1957,6 +1962,7 @@ static void iwl_trans_pcie_removal_wk(struct work_struct *wk)
+
+ kfree(removal);
+ module_put(THIS_MODULE);
++#endif /* LINUX_VERSION_IS_LESS(3,14,0) */
+ }
+
+ static bool iwl_trans_pcie_grab_nic_access(struct iwl_trans *trans,
--
2.18.0
--
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