diff options
| author | Nikhil Badola <nikhil.badola@freescale.com> | 2019-10-21 18:21:51 +0800 |
|---|---|---|
| committer | Felipe Balbi <balbi@kernel.org> | 2019-10-27 08:58:44 +0200 |
| commit | bc1e3a2dd0c9954fd956ac43ca2876bbea018c01 (patch) | |
| tree | 4a3e85f5b50be56fe905226af3b559812cd3832c /drivers/usb/gadget/udc/fsl_udc_core.c | |
| parent | a51bab592fbbef10f0e42a8aed86adfbf6a68fa7 (diff) | |
usb: fsl: Check memory resource before releasing it
Check memory resource existence before releasing it to avoid NULL
pointer dereference
Signed-off-by: Nikhil Badola <nikhil.badola@freescale.com>
Reviewed-by: Ran Wang <ran.wang_1@nxp.com>
Reviewed-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/gadget/udc/fsl_udc_core.c')
| -rw-r--r-- | drivers/usb/gadget/udc/fsl_udc_core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/gadget/udc/fsl_udc_core.c b/drivers/usb/gadget/udc/fsl_udc_core.c index 20141c3096f6..9a05863b2876 100644 --- a/drivers/usb/gadget/udc/fsl_udc_core.c +++ b/drivers/usb/gadget/udc/fsl_udc_core.c @@ -2576,7 +2576,7 @@ static int fsl_udc_remove(struct platform_device *pdev) dma_pool_destroy(udc_controller->td_pool); free_irq(udc_controller->irq, udc_controller); iounmap(dr_regs); - if (pdata->operating_mode == FSL_USB2_DR_DEVICE) + if (res && (pdata->operating_mode == FSL_USB2_DR_DEVICE)) release_mem_region(res->start, resource_size(res)); /* free udc --wait for the release() finished */ |