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Message-Id: <6e14d11b9725494b55df9939bde3fc5b8eaef6e4.1670742502.git.christophe.jaillet@wanadoo.fr>
Date: Sun, 11 Dec 2022 08:08:38 +0100
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: Linus Walleij <linus.walleij@...aro.org>,
Sebastien Bourdelin <sebastien.bourdelin@...oirfairelinux.com>,
Arnd Bergmann <arnd@...db.de>
Cc: linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] bus: ts-nbus: Fix the error handling path of ts_nbus_probe()
If an error occurs after a successful pwm_enable() call, it must be undone
by a corresponding pwm_disable(), as already done in the remove function.
Fixes: 5b143d2a6ede ("bus: add driver for the Technologic Systems NBUS")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
Not sure if we need the mutex_lock()/mutex_unlock() that is in the remove
function.
---
drivers/bus/ts-nbus.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/bus/ts-nbus.c b/drivers/bus/ts-nbus.c
index 38c886dc2ed6..ed568061ba6b 100644
--- a/drivers/bus/ts-nbus.c
+++ b/drivers/bus/ts-nbus.c
@@ -324,11 +324,16 @@ static int ts_nbus_probe(struct platform_device *pdev)
ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
if (ret < 0)
- return ret;
+ goto err_disable_pwm;
dev_info(dev, "initialized\n");
return 0;
+
+err_disable_pwm:
+ pwm_disable(pwm);
+ return ret;
+
}
static int ts_nbus_remove(struct platform_device *pdev)
--
2.34.1
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