netdev - [PATCH v2] ath10k: Fix qmi init error handling

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Message-Id: <20191113154016.42836-1-jeffrey.l.hugo@gmail.com>
Date:   Wed, 13 Nov 2019 07:40:16 -0800
From:   Jeffrey Hugo <jeffrey.l.hugo@...il.com>
To:     kvalo@...eaurora.org, davem@...emloft.net
Cc:     ath10k@...ts.infradead.org, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Jeffrey Hugo <jeffrey.l.hugo@...il.com>
Subject: [PATCH v2] ath10k: Fix qmi init error handling

When ath10k_qmi_init() fails, the error handling does not free the irq
resources, which causes an issue if we EPROBE_DEFER as we'll attempt to
(re-)register irqs which are already registered.

Fix this by doing a power off since we just powered on the hardware, and
freeing the irqs as error handling.

Fixes: ba94c753ccb4 ("ath10k: add QMI message handshake for wcn3990 client")
Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo@...il.com>
---

v2:
-Call power_off() as well

 drivers/net/wireless/ath/ath10k/snoc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c
index cd22c8654aa9..50b3d443ad37 100644
--- a/drivers/net/wireless/ath/ath10k/snoc.c
+++ b/drivers/net/wireless/ath/ath10k/snoc.c
@@ -1563,13 +1563,16 @@ static int ath10k_snoc_probe(struct platform_device *pdev)
 	ret = ath10k_qmi_init(ar, msa_size);
 	if (ret) {
 		ath10k_warn(ar, "failed to register wlfw qmi client: %d\n", ret);
-		goto err_core_destroy;
+		goto err_power_off;
 	}
 
 	ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc probe\n");
 
 	return 0;
 
+err_power_off:
+	ath10k_hw_power_off(ar);
+
 err_free_irq:
 	ath10k_snoc_free_irq(ar);
 
-- 
2.17.1