diff options
| author | Olivier Sobrie <olivier@sobrie.be> | 2012-02-29 08:06:40 +0100 |
|---|---|---|
| committer | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2012-03-08 18:12:22 +0000 |
| commit | e71ff6f265c80b6f04f1d16470b5afa58f0b4648 (patch) | |
| tree | 5fc94eeeab06d4aee5f0982096b1dd9420d4f78b | |
| parent | 33ad39121d5527048394003d16b8b38f1140ebf1 (diff) | |
udlfb: Fix invalid return codes in edid sysfs entry store function
Return a negative errno instead of zero in the write function of
the sysfs entry in case of error.
Also add a check on the return value of dlfb_setup_modes().
Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Acked-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
| -rw-r--r-- | drivers/video/udlfb.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c index 86c8b256e306..157df78e5bfc 100644 --- a/drivers/video/udlfb.c +++ b/drivers/video/udlfb.c @@ -1432,19 +1432,22 @@ static ssize_t edid_store( struct device *fbdev = container_of(kobj, struct device, kobj); struct fb_info *fb_info = dev_get_drvdata(fbdev); struct dlfb_data *dev = fb_info->par; + int ret; /* We only support write of entire EDID at once, no offset*/ if ((src_size != EDID_LENGTH) || (src_off != 0)) - return 0; + return -EINVAL; - dlfb_setup_modes(dev, fb_info, src, src_size); + ret = dlfb_setup_modes(dev, fb_info, src, src_size); + if (ret) + return ret; - if (dev->edid && (memcmp(src, dev->edid, src_size) == 0)) { - pr_info("sysfs written EDID is new default\n"); - dlfb_ops_set_par(fb_info); - return src_size; - } else - return 0; + if (!dev->edid || memcmp(src, dev->edid, src_size)) + return -EINVAL; + + pr_info("sysfs written EDID is new default\n"); + dlfb_ops_set_par(fb_info); + return src_size; } static ssize_t metrics_reset_store(struct device *fbdev, |