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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: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230202151736.64552-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2023-02-02 17:17:36 +02:00 committed by Greg Kroah-Hartman
parent be308d6878
commit 9c0e6fbda8
1 changed files with 1 additions and 2 deletions
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3
drivers/usb/gadget/configfs.c
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@ -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;