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| author | Cai Xinchen <caixinchen1@huawei.com> | 2024-04-16 06:51:37 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-06-16 13:32:34 +0200 |
| commit | 32f92b0078ebf79dbe4827288e0acb50d89d3d5b (patch) | |
| tree | b1a91559d97ccc38ef7f2ab59dce466fa1f598a3 | |
| parent | 68447c350fc1b1dcc6d57d12ffa61fb4d628b704 (diff) | |
| download | linux-32f92b0078ebf79dbe4827288e0acb50d89d3d5b.tar.gz linux-32f92b0078ebf79dbe4827288e0acb50d89d3d5b.tar.bz2 linux-32f92b0078ebf79dbe4827288e0acb50d89d3d5b.zip | |
fbdev: savage: Handle err return when savagefb_check_var failed
commit 6ad959b6703e2c4c5d7af03b4cfd5ff608036339 upstream.
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
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/video/fbdev/savage/savagefb_driver.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/video/fbdev/savage/savagefb_driver.c b/drivers/video/fbdev/savage/savagefb_driver.c index 94ebd8af50cf..224d7c8146a9 100644 --- a/drivers/video/fbdev/savage/savagefb_driver.c +++ b/drivers/video/fbdev/savage/savagefb_driver.c @@ -2271,7 +2271,10 @@ 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); /* |