From: Tomas Winkler <tomas.winkler@intel.com>
Date: Thu, 10 Feb 2011 12:55:23 +0000 (+0200)
Subject: staging/easycap: don't mask return value of usb_control_msg() by 0xFF
X-Git-Tag: firefly_0821_release~7613^2~2197^2~549
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ccb6d2e5dc37605503d0a3182dbb27981f90df94;p=firefly-linux-kernel-4.4.55.git

staging/easycap: don't mask return value of usb_control_msg() by 0xFF

masking return value of usb_control_msg() will mask negative
error values into positive.

Cc: Mike Thomas <rmthomas@sciolus.org>
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Reviewed-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/staging/easycap/easycap_low.c b/drivers/staging/easycap/easycap_low.c
index 7b2de10bc68a..5c41a27a683d 100644
--- a/drivers/staging/easycap/easycap_low.c
+++ b/drivers/staging/easycap/easycap_low.c
@@ -270,7 +270,7 @@ static int regget(struct usb_device *pusb_device,
 			0x00,
 			index, reg, reg_size, 50000);
 
-	return 0xFF & rc;
+	return rc;
 }
 
 static int regset(struct usb_device *pusb_device, u16 index, u16 value)