From a8113da51cf822f90e93436442db5095e20ff6d9 Mon Sep 17 00:00:00 2001 From: Dongliang Mu Date: Sat, 3 Sep 2022 18:00:01 +0800 Subject: usb: misc: uss720: fix uninitialized variable rlen Smatch reports the following error: uninitialized symbol 'rlen' drivers/usb/misc/uss720.c:514 parport_uss720_epp_write_data() error drivers/usb/misc/uss720.c:575 parport_uss720_ecp_write_data() error drivers/usb/misc/uss720.c:593 parport_uss720_ecp_read_data() error drivers/usb/misc/uss720.c:626 parport_uss720_write_compat() error The root cause is, the failure of usb_bulk_msg leads to the uninitialized variable rlen in printk function. Fix this by initializing rlen with zero. Signed-off-by: Dongliang Mu Link: https://lore.kernel.org/r/20220903100004.2874741-1-dzm91@hust.edu.cn Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/uss720.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/usb/misc/uss720.c') diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c index 0be8efcda15d..b00d92db5dfd 100644 --- a/drivers/usb/misc/uss720.c +++ b/drivers/usb/misc/uss720.c @@ -502,7 +502,7 @@ static size_t parport_uss720_epp_write_data(struct parport *pp, const void *buf, #else struct parport_uss720_private *priv = pp->private_data; struct usb_device *usbdev = priv->usbdev; - int rlen; + int rlen = 0; int i; if (!usbdev) @@ -563,7 +563,7 @@ static size_t parport_uss720_ecp_write_data(struct parport *pp, const void *buff { struct parport_uss720_private *priv = pp->private_data; struct usb_device *usbdev = priv->usbdev; - int rlen; + int rlen = 0; int i; if (!usbdev) @@ -581,7 +581,7 @@ static size_t parport_uss720_ecp_read_data(struct parport *pp, void *buffer, siz { struct parport_uss720_private *priv = pp->private_data; struct usb_device *usbdev = priv->usbdev; - int rlen; + int rlen = 0; int i; if (!usbdev) @@ -614,7 +614,7 @@ static size_t parport_uss720_write_compat(struct parport *pp, const void *buffer { struct parport_uss720_private *priv = pp->private_data; struct usb_device *usbdev = priv->usbdev; - int rlen; + int rlen = 0; int i; if (!usbdev) -- cgit v1.2.3