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UPSTREAM: HID: bigbenff: prevent null pointer dereference

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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.com
(cherry picked from commit 918aa1ef104d286d16b9e7ef139a463ac7a296f0)
Bug: 188677105
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ia6fb77a7bd9426ce055e090fb2c1f3a21a2011cc
This commit is contained in:
Benjamin Tissoires
2021-12-02 10:53:32 +01:00
committed by Greg Kroah-Hartman
parent 7b8a19b917
commit 5a72ef56c8
1 changed files with 1 additions and 1 deletions
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2
drivers/hid/hid-bigbenff.c
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@@ -191,7 +191,7 @@ static void bigben_worker(struct work_struct *work)
struct bigben_device, worker); struct bigben_device, worker);
struct hid_field *report_field = bigben->report->field[0]; struct hid_field *report_field = bigben->report->field[0];
if (bigben->removed) if (bigben->removed || !report_field)
return; return;
if (bigben->work_led) { if (bigben->work_led) {