linux-kernel - [PATCH] mfd: intel_soc_pmic: Fix an error handling path in intel_soc_pmic_i2c

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Sun, 31 Jul 2022 13:19:24 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Andy Shevchenko <andy@...nel.org>, Lee Jones <lee@...nel.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Shobhit Kumar <shobhit.kumar@...el.com>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Lee Jones <lee.jones@...aro.org>
Subject: [PATCH] mfd: intel_soc_pmic: Fix an error handling path in intel_soc_pmic_i2c_probe()

The commit in Fixes: has added a pwm_add_table() call in the probe() and
a pwm_remove_table() call in the remove(), but forget to update the error
handling path of the probe.

Add the missing pwm_remove_table() call.

Fixes: a3aa9a93df9f ("mfd: intel_soc_pmic_core: ADD PWM lookup table for CRC PMIC based PWM")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
The order of pwm_remove_table() and regmap_del_irq_chip() is not the same
as the one in the remove function.
The one in this patch looks more logical to me because things are done in
the reverse order of allocations...

... but in regmap_del_irq_chip() there is irq, and in such a case releasing
resource is sometime tricky.

Review with care.
---
 drivers/mfd/intel_soc_pmic_core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mfd/intel_soc_pmic_core.c b/drivers/mfd/intel_soc_pmic_core.c
index 5e8c94e008ed..85d070bce0e2 100644
--- a/drivers/mfd/intel_soc_pmic_core.c
+++ b/drivers/mfd/intel_soc_pmic_core.c
@@ -77,6 +77,7 @@ static int intel_soc_pmic_i2c_probe(struct i2c_client *i2c,
 	return 0;
 
 err_del_irq_chip:
+	pwm_remove_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup));
 	regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data);
 	return ret;
 }
-- 
2.34.1