From: Benjamin Tissoires Date: Wed, 5 Jun 2019 12:44:05 +0000 (+0200) Subject: Revert "HID: Increase maximum report size allowed by hid_field_extract()" X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=15fc1b5c86128f91c8c6699c3b0d9615740b13f1;p=linux.git Revert "HID: Increase maximum report size allowed by hid_field_extract()" This reverts commit 94a9992f7dbdfb28976b565af220e0c4a117144a. The commit allows for more than 32 bits in hid_field_extract(), but the return value is a 32 bits int. So basically what this commit is doing is just silencing those legitimate errors. Revert to a previous situation in the hope that a proper fix will be impletemented. Fixes: 94a9992f7dbd ("HID: Increase maximum report size allowed by hid_field_extract()") Cc: stable@vger.kernel.org # v5.1 Acked-by: Jiri Kosina Signed-off-by: Benjamin Tissoires --- diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 92387fc0bf180..4407cf549908b 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1314,10 +1314,10 @@ static u32 __extract(u8 *report, unsigned offset, int n) u32 hid_field_extract(const struct hid_device *hid, u8 *report, unsigned offset, unsigned n) { - if (n > 256) { - hid_warn(hid, "hid_field_extract() called with n (%d) > 256! (%s)\n", + if (n > 32) { + hid_warn(hid, "hid_field_extract() called with n (%d) > 32! (%s)\n", n, current->comm); - n = 256; + n = 32; } return __extract(report, offset, n);