tmakin/tegra-linux-noble
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

wifi: ath12k: fix soft lockup on suspend

Browse Source 
BugLink: https://bugs.launchpad.net/bugs/2083488

commit a47f3320bb4ba6714abe8dddb36399367b491358 upstream.

The ext interrupts are enabled when the firmware has been started, but
this may never happen, for example, if the board configuration file is
missing.

When the system is later suspended, the driver unconditionally tries to
disable interrupts, which results in an irq disable imbalance and causes
the driver to spin indefinitely in napi_synchronize().

Make sure that the interrupts have been enabled before attempting to
disable them.

Fixes: d889913205 ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices")
Cc: stable@vger.kernel.org	# 6.3
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://patch.msgid.link/20240709073132.9168-1-johan+linaro@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
This commit is contained in:
Johan Hovold
2024-07-09 09:31:32 +02:00
committed by Mehmet Basaran
parent c351cbac98
commit 7e9e180821
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/net/wireless/ath/ath12k/pci.c
+2 -1
View File
@@ -469,7 +469,8 @@ static void __ath12k_pci_ext_irq_disable(struct ath12k_base *ab)
{
int i;
clear_bit(ATH12K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags);
if (!test_and_clear_bit(ATH12K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags))
return;
for (i = 0; i < ATH12K_EXT_IRQ_GRP_NUM_MAX; i++) {
struct ath12k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];