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Re: [PATCH 35/50] wifi: ath12k: add pci.c

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On 8/12/2022 9:09 AM, Kalle Valo wrote:
From: Kalle Valo <quic_kvalo@xxxxxxxxxxx>

(Patches split into one patch per file for easier review, but the final
commit will be one big patch. See the cover letter for more info.)

Signed-off-by: Kalle Valo <quic_kvalo@xxxxxxxxxxx>
---
  drivers/net/wireless/ath/ath12k/pci.c | 1344 +++++++++++++++++++++++++++++++++
  1 file changed, 1344 insertions(+)

diff --git a/drivers/net/wireless/ath/ath12k/pci.c b/drivers/net/wireless/ath/ath12k/pci.c

snip

+static void ath12k_pci_remove(struct pci_dev *pdev)
+{
+	struct ath12k_base *ab = pci_get_drvdata(pdev);
+	struct ath12k_pci *ab_pci = ath12k_pci_priv(ab);
+
+	if (test_bit(ATH12K_FLAG_QMI_FAIL, &ab->dev_flags)) {
+		ath12k_pci_power_down(ab);
+		ath12k_qmi_deinit_service(ab);
+		goto qmi_fail;
+	}
+
+	set_bit(ATH12K_FLAG_UNREGISTERING, &ab->dev_flags);
+
+	cancel_work_sync(&ab->reset_work);
+	ath12k_core_deinit(ab);
+
+qmi_fail:
+	ath12k_mhi_unregister(ab_pci);
+
+	ath12k_pci_free_irq(ab);
+	ath12k_pci_msi_free(ab_pci);
+	ath12k_pci_free_region(ab_pci);
+
+	ath12k_hal_srng_deinit(ab);
+	ath12k_ce_free_pipes(ab);
+	destroy_workqueue(ab->workqueue_aux);

it seems strange/asymetrical to destroy this here.

it was allocated in ath12k_core_alloc() so I'd expect it to be destroyed in ath12k_core_free() to maintain symmetry

in addition I don't see ab->workqueue being destroyed, and imo that should also take place in ath12k_core_free() for the same reason

+	ath12k_core_free(ab);
+}

snip

+static SIMPLE_DEV_PM_OPS(ath12k_pci_pm_ops,
+			 ath12k_pci_pm_suspend,
+			 ath12k_pci_pm_resume);
+
+static struct pci_driver ath12k_pci_driver = {
+	.name = "ath12k_pci",
+	.id_table = ath12k_pci_id_table,
+	.probe = ath12k_pci_probe,
+	.remove = ath12k_pci_remove,
+	.shutdown = ath12k_pci_shutdown,
+#ifdef CONFIG_PM
+	.driver.pm = &ath12k_pci_pm_ops,
+#endif

conditional compilation is unnecessary here since SIMPLE_DEV_PM_OPS handles the conditional

+};
+
+static int ath12k_pci_init(void)
+{
+	int ret;
+
+	ret = pci_register_driver(&ath12k_pci_driver);
+	if (ret) {
+		pr_err("failed to register ath12k pci driver: %d\n",
+		       ret);
+		return ret;
+	}
+
+	return 0;
+}
+module_init(ath12k_pci_init);
+
+static void ath12k_pci_exit(void)
+{
+	pci_unregister_driver(&ath12k_pci_driver);
+}
+
+module_exit(ath12k_pci_exit);
+
+MODULE_DESCRIPTION("Driver support for Qualcomm Technologies 802.11be WLAN PCIe devices");
+MODULE_LICENSE("Dual BSD/GPL");





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