mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 08:19:28 +00:00
serial: mvebu-uart: Fix to avoid a potential NULL pointer dereference
of_match_device on failure to find a matching device can return a NULL pointer. The patch checks for such a scenrio and passes the error upstream. Signed-off-by: Aditya Pakki <pakki001@umn.edu> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
9e98c678c2
commit
32f4717983
1 changed files with 3 additions and 0 deletions
|
@ -810,6 +810,9 @@ static int mvebu_uart_probe(struct platform_device *pdev)
|
||||||
return -EINVAL;
|
return -EINVAL;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
if (!match)
|
||||||
|
return -ENODEV;
|
||||||
|
|
||||||
/* Assume that all UART ports have a DT alias or none has */
|
/* Assume that all UART ports have a DT alias or none has */
|
||||||
id = of_alias_get_id(pdev->dev.of_node, "serial");
|
id = of_alias_get_id(pdev->dev.of_node, "serial");
|
||||||
if (!pdev->dev.of_node || id < 0)
|
if (!pdev->dev.of_node || id < 0)
|
||||||
|
|
Loading…
Reference in a new issue