From: Shuah Khan skhan@linuxfoundation.org
stable inclusion from stable-v5.10.122 commit 41ec9466944f221950765b2484798f2baf387f0b category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5W6OE
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit f861d36e021e1ac4a0a2a1f6411d623809975d63 ]
rtsx_usb_probe() doesn't call usb_set_intfdata() to null out the interface pointer when probe fails. This leaves a stale pointer. Noticed the missing usb_set_intfdata() while debugging an unrelated invalid DMA mapping problem.
Fix it with a call to usb_set_intfdata(..., NULL).
Signed-off-by: Shuah Khan skhan@linuxfoundation.org Link: https://lore.kernel.org/r/20220429210913.46804-1-skhan@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Reviewed-by: Wei Li liwei391@huawei.com --- drivers/misc/cardreader/rtsx_usb.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/misc/cardreader/rtsx_usb.c b/drivers/misc/cardreader/rtsx_usb.c index 59eda55d92a3..1ef9b61077c4 100644 --- a/drivers/misc/cardreader/rtsx_usb.c +++ b/drivers/misc/cardreader/rtsx_usb.c @@ -667,6 +667,7 @@ static int rtsx_usb_probe(struct usb_interface *intf, return 0;
out_init_fail: + usb_set_intfdata(ucr->pusb_intf, NULL); usb_free_coherent(ucr->pusb_dev, IOBUF_SIZE, ucr->iobuf, ucr->iobuf_dma); return ret;