From: Benjamin Tissoires benjamin.tissoires@redhat.com
stable inclusion from stable-v5.10.85 commit 6272b17001e6fdcf7b4a16206287010a1523fa6e bugzilla: 186032 https://gitee.com/openeuler/kernel/issues/I4QVI4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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commit 918aa1ef104d286d16b9e7ef139a463ac7a296f0 upstream.
When emulating the device through uhid, there is a chance we don't have output reports and so report_field is null.
Cc: stable@vger.kernel.org Signed-off-by: Benjamin Tissoires benjamin.tissoires@redhat.com Reviewed-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Link: https://lore.kernel.org/r/20211202095334.14399-3-benjamin.tissoires@redhat.c... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/hid/hid-bigbenff.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hid/hid-bigbenff.c b/drivers/hid/hid-bigbenff.c index db6da21ade06..74ad8bf98bfd 100644 --- a/drivers/hid/hid-bigbenff.c +++ b/drivers/hid/hid-bigbenff.c @@ -191,7 +191,7 @@ static void bigben_worker(struct work_struct *work) struct bigben_device, worker); struct hid_field *report_field = bigben->report->field[0];
- if (bigben->removed) + if (bigben->removed || !report_field) return;
if (bigben->work_led) {