AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-04 08:36:48 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

tty: mxs-auart: fix a potential NULL pointer dereference

Browse Source 
In case ioremap fails, the fix returns -ENOMEM to avoid NULL
pointer dereferences.
Multiple places use port.membase.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kangjie Lu 2019-03-14 02:21:51 -05:00 committed by Greg Kroah-Hartman
parent c85be04106
commit 6734330654
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/tty/serial/mxs-auart.c
View File

@ -1686,6 +1686,10 @@ static int mxs_auart_probe(struct platform_device *pdev)
s->port.mapbase = r->start;
s->port.membase = ioremap(r->start, resource_size(r));
if (!s->port.membase) {
ret = -ENOMEM;
goto out_disable_clks;
}
s->port.ops = &mxs_auart_ops;
s->port.iotype = UPIO_MEM;
s->port.fifosize = MXS_AUART_FIFO_SIZE;