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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2023-02-02 17:17:36 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-06 13:46:41 +0100 |
| commit | 9c0e6fbda803dfd66c05c1f683069b46bd4cbba0 (patch) | |
| tree | 71f4d2b2ac1aac3b1b6ecfe2d5fa8a9284ad75eb /drivers/usb/gadget/configfs.c | |
| parent | be308d68785b205e483b3a0c61ba3a82da468f2c (diff) | |
| download | linux-stable-9c0e6fbda803dfd66c05c1f683069b46bd4cbba0.tar.gz linux-stable-9c0e6fbda803dfd66c05c1f683069b46bd4cbba0.tar.bz2 linux-stable-9c0e6fbda803dfd66c05c1f683069b46bd4cbba0.zip | |
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>
Diffstat (limited to 'drivers/usb/gadget/configfs.c')
| -rw-r--r-- | drivers/usb/gadget/configfs.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index c102adbcd4e1..e89aa2877a33 100644 --- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -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; |