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fbdev: ssd1307fb: fix error return code

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Propagate error code on failure.  Also changed %ld to %d in dev_err to use
ret variable rather than putting two calls to PTR_ERR.

A simplified version of the semantic match that finds the first problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Julia Lawall 2015-08-23 02:11:15 +02:00 committed by Tomi Valkeinen
parent b4df20474f
commit c4e6774de1
1 changed files with 3 additions and 2 deletions
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5
drivers/video/fbdev/ssd1307fb.c
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@ -656,8 +656,9 @@ static int ssd1307fb_probe(struct i2c_client *client,
bl = backlight_device_register(bl_name, &client->dev, par, bl = backlight_device_register(bl_name, &client->dev, par,
&ssd1307fb_bl_ops, NULL); &ssd1307fb_bl_ops, NULL);
if (IS_ERR(bl)) { if (IS_ERR(bl)) {
dev_err(&client->dev, "unable to register backlight device: %ld\n", ret = PTR_ERR(bl);
PTR_ERR(bl)); dev_err(&client->dev, "unable to register backlight device: %d\n",
ret);
goto bl_init_error; goto bl_init_error;
} }