[OpenWrt-Devel] [PATCH 3/3] mac80211: ath10k: reset chip after supported check

[Tomislav Požega]

When chip reset is done before the chip is checked if supported
there will be crash. Previous behaviour caused bootloops on
Archer C7 v1 units, this patch allows clean device boot without
excluding ath10k driver.

Signed-off-by: Tomislav Požega <pozega.tomislav at gmail.com>
---
 ...0-ath10k-reset-chip-after-supported-check.patch |   39 ++++++++++++++++++++
 1 files changed, 39 insertions(+), 0 deletions(-)
 create mode 100644 package/kernel/mac80211/patches/ath/980-ath10k-reset-chip-after-supported-check.patch

diff --git a/package/kernel/mac80211/patches/ath/980-ath10k-reset-chip-after-supported-check.patch b/package/kernel/mac80211/patches/ath/980-ath10k-reset-chip-after-supported-check.patch
new file mode 100644
index 0000000..81ca5e1
--- /dev/null
+++ b/package/kernel/mac80211/patches/ath/980-ath10k-reset-chip-after-supported-check.patch
@@ -0,0 +1,39 @@
+From: Tomislav Požega <pozega.tomislav at gmail.com>
+Date: Fri, 22 Mar 2019 19:06:25 +0100
+Subject: [PATCH] ath10k: reset chip after supported check
+
+When chip reset is done before the chip is checked if supported
+there will be crash. Previous behaviour caused bootloops on
+Archer C7 v1 units, this patch allows clean device boot without
+excluding ath10k driver.
+
+Signed-off-by: Tomislav Požega <pozega.tomislav at gmail.com>
+
+--- a/drivers/net/wireless/ath/ath10k/pci.c
++++ b/drivers/net/wireless/ath/ath10k/pci.c
+@@ -3612,12 +3612,6 @@ static int ath10k_pci_probe(struct pci_d
+ 		goto err_deinit_irq;
+ 	}
+ 
+-	ret = ath10k_pci_chip_reset(ar);
+-	if (ret) {
+-		ath10k_err(ar, "failed to reset chip: %d\n", ret);
+-		goto err_free_irq;
+-	}
+-
+ 	chip_id = ath10k_pci_soc_read32(ar, SOC_CHIP_ID_ADDRESS);
+ 	if (chip_id == 0xffffffff) {
+ 		ath10k_err(ar, "failed to get chip id\n");
+@@ -3630,6 +3624,12 @@ static int ath10k_pci_probe(struct pci_d
+ 		goto err_free_irq;
+ 	}
+ 
++	ret = ath10k_pci_chip_reset(ar);
++	if (ret) {
++		ath10k_err(ar, "failed to reset chip: %d\n", ret);
++		goto err_free_irq;
++	}
++
+ 	ret = ath10k_core_register(ar, chip_id);
+ 	if (ret) {
+ 		ath10k_err(ar, "failed to register driver core: %d\n", ret);
-- 
1.7.0.4


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