From: Janusz Dziedzic Date: Mon, 24 Jun 2024 16:48:46 +0000 (+0200) Subject: mac80211: ath12k: prevent ltssm crash X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=935b2b7dcef61b2893ed5dff307dd8f8a1156899;p=openwrt%2Fstaging%2Fnbd.git mac80211: ath12k: prevent ltssm crash Fix ltssm crashes on BPI-Rx boards. Seems read32/write32 using wrong address which is not a problem on x86/64 PCI controllers. But have issues on BPI-Rx boards. Signed-off-by: Janusz Dziedzic Link: https://github.com/openwrt/openwrt/pull/15945 Signed-off-by: Hauke Mehrtens --- diff --git a/package/kernel/mac80211/patches/ath12k/100-ath12k-prevent-ltssm-startup-crash.patch b/package/kernel/mac80211/patches/ath12k/100-ath12k-prevent-ltssm-startup-crash.patch new file mode 100644 index 0000000000..cd85a0f6aa --- /dev/null +++ b/package/kernel/mac80211/patches/ath12k/100-ath12k-prevent-ltssm-startup-crash.patch @@ -0,0 +1,17 @@ +Fix ltssm crashes on BPI-Rx boards. +Seems read32/write32 using wrong address which +is not a problem on x86/64 PCI controllers. +But have issues on BPI-Rx boards. + +--- a/drivers/net/wireless/ath/ath12k/pci.c ++++ b/drivers/net/wireless/ath/ath12k/pci.c +@@ -277,6 +277,9 @@ static void ath12k_pci_enable_ltssm(stru + u32 val; + int i; + ++ /* Prevent startup crash on BPI-Rx */ ++ return; ++ + val = ath12k_pci_read32(ab, PCIE_PCIE_PARF_LTSSM); + + /* PCIE link seems very unstable after the Hot Reset*/