linux-kernel - [PATCH v1 2/2] fbdev: ssd1307fb: Drop duplicate NULL checks for PWM APIs

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:   Tue,  1 Nov 2022 17:09:47 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Javier Martinez Canillas <javierm@...hat.com>,
        linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Cc:     Helge Deller <deller@....de>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 2/2] fbdev: ssd1307fb: Drop duplicate NULL checks for PWM APIs

pwm_disable() and pwm_put() are NULL-aware, no need to
duplicate the check in the caller.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/video/fbdev/ssd1307fb.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c
index 5c891aa00d59..046b9990d27c 100644
--- a/drivers/video/fbdev/ssd1307fb.c
+++ b/drivers/video/fbdev/ssd1307fb.c
@@ -803,10 +803,8 @@ static int ssd1307fb_probe(struct i2c_client *client)
 bl_init_error:
 	unregister_framebuffer(info);
 panel_init_error:
-	if (par->device_info->need_pwm) {
-		pwm_disable(par->pwm);
-		pwm_put(par->pwm);
-	}
+	pwm_disable(par->pwm);
+	pwm_put(par->pwm);
 regulator_enable_error:
 	if (par->vbat_reg)
 		regulator_disable(par->vbat_reg);
@@ -827,10 +825,8 @@ static void ssd1307fb_remove(struct i2c_client *client)
 	backlight_device_unregister(info->bl_dev);
 
 	unregister_framebuffer(info);
-	if (par->device_info->need_pwm) {
-		pwm_disable(par->pwm);
-		pwm_put(par->pwm);
-	}
+	pwm_disable(par->pwm);
+	pwm_put(par->pwm);
 	if (par->vbat_reg)
 		regulator_disable(par->vbat_reg);
 	fb_deferred_io_cleanup(info);
-- 
2.35.1