diff options
| author | Lee Jones <lee@kernel.org> | 2023-12-13 17:42:40 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-12-15 13:55:30 +0100 |
| commit | e5892ea81515366588e8fb00a5a3cdca687355dc (patch) | |
| tree | c6b2586315b9f0fbcf675a490db3b825ca0ec222 /drivers/usb/phy | |
| parent | usb: mon_text: Replace snprintf() with the safer scnprintf() variant (diff) | |
| download | linux-e5892ea81515366588e8fb00a5a3cdca687355dc.tar.xz linux-e5892ea81515366588e8fb00a5a3cdca687355dc.zip | |
usb: phy: twl6030: Remove snprintf() from sysfs call-backs and replace with sysfs_emit()
Since snprintf() has the documented, but still rather strange trait of
returning the length of the data that *would have been* written to the
array if space were available, rather than the arguably more useful
length of data *actually* written, it is usually considered wise to use
something else instead in order to avoid confusion.
In the case of sysfs call-backs, new wrappers exist that do just that.
Link: https://lwn.net/Articles/69419/
Link: https://github.com/KSPP/linux/issues/105
Cc: Hema HK <hemahk@ti.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20231213164246.1021885-12-lee@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/phy')
| -rw-r--r-- | drivers/usb/phy/phy-twl6030-usb.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/usb/phy/phy-twl6030-usb.c b/drivers/usb/phy/phy-twl6030-usb.c index c3ce6b1054f1..da09cff55abc 100644 --- a/drivers/usb/phy/phy-twl6030-usb.c +++ b/drivers/usb/phy/phy-twl6030-usb.c @@ -179,16 +179,16 @@ static ssize_t vbus_show(struct device *dev, switch (twl->linkstat) { case MUSB_VBUS_VALID: - ret = snprintf(buf, PAGE_SIZE, "vbus\n"); + ret = sysfs_emit(buf, "vbus\n"); break; case MUSB_ID_GROUND: - ret = snprintf(buf, PAGE_SIZE, "id\n"); + ret = sysfs_emit(buf, "id\n"); break; case MUSB_VBUS_OFF: - ret = snprintf(buf, PAGE_SIZE, "none\n"); + ret = sysfs_emit(buf, "none\n"); break; default: - ret = snprintf(buf, PAGE_SIZE, "UNKNOWN\n"); + ret = sysfs_emit(buf, "UNKNOWN\n"); } spin_unlock_irqrestore(&twl->lock, flags); |