Commit 9c0e6fbd authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Greg Kroah-Hartman
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usb: gadget: configfs: Use memcpy_and_pad() 



Instead of zeroing some memory and then copying data in part or all of it,
use memcpy_and_pad().
This avoids writing some memory twice and should save a few cycles.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230202151736.64552-1-andriy.shevchenko@linux.intel.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent be308d68

drivers/usb/gadget/configfs.c

+1 −2
Original line number Diff line number Diff line
@@ -915,8 +915,7 @@ static ssize_t webusb_landingPage_store(struct config_item *item, const char *pa 


	mutex_lock(&gi->lock);

	// ensure 0 bytes are set, in case the new landing page is shorter then the old one.

	memset(gi->landing_page, 0, sizeof(gi->landing_page));

	memcpy(gi->landing_page, page, l);

	memcpy_and_pad(gi->landing_page, sizeof(gi->landing_page), page, l, 0);

	mutex_unlock(&gi->lock);



	return len;