From: Sergey Shtylyov Date: Fri, 22 Apr 2022 19:23:55 +0000 (+0300) Subject: usb: core: devices: drop redundant buffer overflow checks X-Git-Tag: howlett/maple/20220722_2~353^2~70 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=08908fa1547d0550a058d0ce2d613e570f51e5f9;p=users%2Fjedix%2Flinux-maple.git usb: core: devices: drop redundant buffer overflow checks The USB device dump code often checks for the buffer overflow just before calling the functions that do that first thing anyways. Such checks are redundant and may be dropped... Signed-off-by: Sergey Shtylyov Link: https://lore.kernel.org/r/0453cb0d-7b2b-25e6-50e3-091610951e58@omp.ru Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c index cc12cdd5559f..2c14a9636056 100644 --- a/drivers/usb/core/devices.c +++ b/drivers/usb/core/devices.c @@ -228,8 +228,6 @@ static char *usb_dump_interface(int speed, char *start, char *end, start = usb_dump_interface_descriptor(start, end, intfc, iface, setno); for (i = 0; i < desc->desc.bNumEndpoints; i++) { - if (start > end) - return start; start = usb_dump_endpoint_descriptor(speed, start, end, &desc->endpoint[i].desc); } @@ -302,8 +300,6 @@ static char *usb_dump_config(int speed, char *start, char *end, intfc = config->intf_cache[i]; interface = config->interface[i]; for (j = 0; j < intfc->num_altsetting; j++) { - if (start > end) - return start; start = usb_dump_interface(speed, start, end, intfc, interface, j); } @@ -369,19 +365,11 @@ static char *usb_dump_desc(char *start, char *end, struct usb_device *dev) { int i; - if (start > end) - return start; - start = usb_dump_device_descriptor(start, end, &dev->descriptor); - if (start > end) - return start; - start = usb_dump_device_strings(start, end, dev); for (i = 0; i < dev->descriptor.bNumConfigurations; i++) { - if (start > end) - return start; start = usb_dump_config(dev->speed, start, end, dev->config + i, /* active ? */