| Message ID | 20240416065137.530693-1-caixinchen1@huawei.com |
|---|---|
| State | New |
| Headers | show |
| Series | [-next] fbdev: savage: Handle err return when savagefb_check_var failed | expand |
On 4/16/24 08:51, Cai Xinchen wrote: > The commit 04e5eac8f3ab("fbdev: savage: Error out if pixclock equals zero") > checks the value of pixclock to avoid divide-by-zero error. However > the function savagefb_probe doesn't handle the error return of > savagefb_check_var. When pixclock is 0, it will cause divide-by-zero error. > > Fixes: 04e5eac8f3ab ("fbdev: savage: Error out if pixclock equals zero") > Signed-off-by: Cai Xinchen <caixinchen1@huawei.com> > Cc: stable@vger.kernel.org > --- > drivers/video/fbdev/savage/savagefb_driver.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) applied. Thanks! Helge > > diff --git a/drivers/video/fbdev/savage/savagefb_driver.c b/drivers/video/fbdev/savage/savagefb_driver.c > index ebc9aeffdde7..ac41f8f37589 100644 > --- a/drivers/video/fbdev/savage/savagefb_driver.c > +++ b/drivers/video/fbdev/savage/savagefb_driver.c > @@ -2276,7 +2276,10 @@ static int savagefb_probe(struct pci_dev *dev, const struct pci_device_id *id) > if (info->var.xres_virtual > 0x1000) > info->var.xres_virtual = 0x1000; > #endif > - savagefb_check_var(&info->var, info); > + err = savagefb_check_var(&info->var, info); > + if (err) > + goto failed; > + > savagefb_set_fix(info); > > /*
diff --git a/drivers/video/fbdev/savage/savagefb_driver.c b/drivers/video/fbdev/savage/savagefb_driver.c index ebc9aeffdde7..ac41f8f37589 100644 --- a/drivers/video/fbdev/savage/savagefb_driver.c +++ b/drivers/video/fbdev/savage/savagefb_driver.c @@ -2276,7 +2276,10 @@ static int savagefb_probe(struct pci_dev *dev, const struct pci_device_id *id) if (info->var.xres_virtual > 0x1000) info->var.xres_virtual = 0x1000; #endif - savagefb_check_var(&info->var, info); + err = savagefb_check_var(&info->var, info); + if (err) + goto failed; + savagefb_set_fix(info); /*
The commit 04e5eac8f3ab("fbdev: savage: Error out if pixclock equals zero") checks the value of pixclock to avoid divide-by-zero error. However the function savagefb_probe doesn't handle the error return of savagefb_check_var. When pixclock is 0, it will cause divide-by-zero error. Fixes: 04e5eac8f3ab ("fbdev: savage: Error out if pixclock equals zero") Signed-off-by: Cai Xinchen <caixinchen1@huawei.com> Cc: stable@vger.kernel.org --- drivers/video/fbdev/savage/savagefb_driver.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)