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authorKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>2022-09-16 15:29:08 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-09-24 15:51:53 +0300
commit16f14551d0df9e7cd283545d7d748829594d912f (patch)
treee02d26e286dbaa57e5c93cab68a06b49e8a074c4 /drivers/slimbus/qcom-ngd-ctrl.c
parent5038d21dde818fe74ba1fcb6f2cee35b8c2ebbf2 (diff)
downloadlinux-16f14551d0df9e7cd283545d7d748829594d912f.tar.xz
slimbus: qcom-ngd: cleanup in probe error path
Add proper error path in probe() to cleanup resources previously acquired/allocated to fix warnings visible during probe deferral: notifier callback qcom_slim_ngd_ssr_notify already registered WARNING: CPU: 6 PID: 70 at kernel/notifier.c:28 notifier_chain_register+0x5c/0x90 Modules linked in: CPU: 6 PID: 70 Comm: kworker/u16:1 Not tainted 6.0.0-rc3-next-20220830 #380 Call trace: notifier_chain_register+0x5c/0x90 srcu_notifier_chain_register+0x44/0x90 qcom_register_ssr_notifier+0x38/0x4c qcom_slim_ngd_ctrl_probe+0xd8/0x400 platform_probe+0x6c/0xe0 really_probe+0xbc/0x2d4 __driver_probe_device+0x78/0xe0 driver_probe_device+0x3c/0x12c __device_attach_driver+0xb8/0x120 bus_for_each_drv+0x78/0xd0 __device_attach+0xa8/0x1c0 device_initial_probe+0x18/0x24 bus_probe_device+0xa0/0xac deferred_probe_work_func+0x88/0xc0 process_one_work+0x1d4/0x320 worker_thread+0x2cc/0x44c kthread+0x110/0x114 ret_from_fork+0x10/0x20 Fixes: e1ae85e1830e ("slimbus: qcom-ngd-ctrl: add Protection Domain Restart Support") Cc: <stable@vger.kernel.org> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20220916122910.170730-3-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/slimbus/qcom-ngd-ctrl.c')
-rw-r--r--drivers/slimbus/qcom-ngd-ctrl.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c
index f4f330b9fa72..bacc6af1d51e 100644
--- a/drivers/slimbus/qcom-ngd-ctrl.c
+++ b/drivers/slimbus/qcom-ngd-ctrl.c
@@ -1576,18 +1576,27 @@ static int qcom_slim_ngd_ctrl_probe(struct platform_device *pdev)
ctrl->pdr = pdr_handle_alloc(slim_pd_status, ctrl);
if (IS_ERR(ctrl->pdr)) {
dev_err(dev, "Failed to init PDR handle\n");
- return PTR_ERR(ctrl->pdr);
+ ret = PTR_ERR(ctrl->pdr);
+ goto err_pdr_alloc;
}
pds = pdr_add_lookup(ctrl->pdr, "avs/audio", "msm/adsp/audio_pd");
if (IS_ERR(pds) && PTR_ERR(pds) != -EALREADY) {
ret = PTR_ERR(pds);
dev_err(dev, "pdr add lookup failed: %d\n", ret);
- return ret;
+ goto err_pdr_lookup;
}
platform_driver_register(&qcom_slim_ngd_driver);
return of_qcom_slim_ngd_register(dev, ctrl);
+
+err_pdr_alloc:
+ qcom_unregister_ssr_notifier(ctrl->notifier, &ctrl->nb);
+
+err_pdr_lookup:
+ pdr_handle_release(ctrl->pdr);
+
+ return ret;
}
static int qcom_slim_ngd_ctrl_remove(struct platform_device *pdev)