Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 954d0564 authored by Nikhil Badola's avatar Nikhil Badola Committed by Greg Kroah-Hartman
Browse files

usb: fsl: Check memory resource before releasing it 



[ Upstream commit bc1e3a2dd0c9954fd956ac43ca2876bbea018c01 ]

Check memory resource existence before releasing it to avoid NULL
pointer dereference

Signed-off-by: default avatarNikhil Badola <nikhil.badola@freescale.com>
Reviewed-by: default avatarRan Wang <ran.wang_1@nxp.com>
Reviewed-by: default avatarPeter Chen <peter.chen@nxp.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent c368df30

drivers/usb/gadget/udc/fsl_udc_core.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -2570,7 +2570,7 @@ static int fsl_udc_remove(struct platform_device *pdev) 
	dma_pool_destroy(udc_controller->td_pool);

	dma_pool_destroy(udc_controller->td_pool);

	free_irq(udc_controller->irq, udc_controller);

	free_irq(udc_controller->irq, udc_controller);

	iounmap(dr_regs);

	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));

		release_mem_region(res->start, resource_size(res));





	/* free udc --wait for the release() finished */

	/* free udc --wait for the release() finished */