diff options
Diffstat (limited to 'package/kernel/mac80211/patches/brcm/104-v5.5-brcmfmac-disable-PCIe-interrupts-before-bus-reset.patch')
-rw-r--r-- | package/kernel/mac80211/patches/brcm/104-v5.5-brcmfmac-disable-PCIe-interrupts-before-bus-reset.patch | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/package/kernel/mac80211/patches/brcm/104-v5.5-brcmfmac-disable-PCIe-interrupts-before-bus-reset.patch b/package/kernel/mac80211/patches/brcm/104-v5.5-brcmfmac-disable-PCIe-interrupts-before-bus-reset.patch deleted file mode 100644 index a92118a19a..0000000000 --- a/package/kernel/mac80211/patches/brcm/104-v5.5-brcmfmac-disable-PCIe-interrupts-before-bus-reset.patch +++ /dev/null @@ -1,54 +0,0 @@ -From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> -Date: Mon, 18 Nov 2019 11:52:41 +0100 -Subject: [PATCH FIX] brcmfmac: disable PCIe interrupts before bus reset -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -Keeping interrupts on could result in brcmfmac freeing some resources -and then IRQ handlers trying to use them. That was obviously a straight -path for crashing a kernel. - -Example: -CPU0 CPU1 ----- ---- -brcmf_pcie_reset - brcmf_pcie_bus_console_read - brcmf_detach - ... - brcmf_fweh_detach - brcmf_proto_detach - brcmf_pcie_isr_thread - ... - brcmf_proto_msgbuf_rx_trigger - ... - drvr->proto->pd - brcmf_pcie_release_irq - -[ 363.789218] Unable to handle kernel NULL pointer dereference at virtual address 00000038 -[ 363.797339] pgd = c0004000 -[ 363.800050] [00000038] *pgd=00000000 -[ 363.803635] Internal error: Oops: 17 [#1] SMP ARM -(...) -[ 364.029209] Backtrace: -[ 364.031725] [<bf243838>] (brcmf_proto_msgbuf_rx_trigger [brcmfmac]) from [<bf2471dc>] (brcmf_pcie_isr_thread+0x228/0x274 [brcmfmac]) -[ 364.043662] r7:00000001 r6:c8ca0000 r5:00010000 r4:c7b4f800 - -Fixes: 4684997d9eea ("brcmfmac: reset PCIe bus on a firmware crash") -Cc: stable@vger.kernel.org # v5.2+ -Signed-off-by: Rafał Miłecki <rafal@milecki.pl> ---- - drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c | 2 ++ - 1 file changed, 2 insertions(+) - ---- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c -+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c -@@ -1427,6 +1427,8 @@ static int brcmf_pcie_reset(struct devic - struct brcmf_fw_request *fwreq; - int err; - -+ brcmf_pcie_intr_disable(devinfo); -+ - brcmf_pcie_bus_console_read(devinfo, true); - - brcmf_detach(dev); |