On (03/20/19 08:19), Minchan Kim wrote: > Cc: <stable@xxxxxxxxxxxxxxx> [5.0] > Reported-by: Makoto Wu <makotowu@xxxxxxxxxx> > Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx> Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx> > +++ b/drivers/block/zram/zram_drv.c > @@ -290,18 +290,8 @@ static ssize_t idle_store(struct device *dev, > struct zram *zram = dev_to_zram(dev); > unsigned long nr_pages = zram->disksize >> PAGE_SHIFT; > int index; > - char mode_buf[8]; > - ssize_t sz; > > - sz = strscpy(mode_buf, buf, sizeof(mode_buf)); > - if (sz <= 0) > - return -EINVAL; > - > - /* ignore trailing new line */ > - if (mode_buf[sz - 1] == '\n') > - mode_buf[sz - 1] = 0x00; > - > - if (strcmp(mode_buf, "all")) > + if (!sysfs_streq(buf, "all")) > return -EINVAL; [..] That's a good improvement of the code. -ss
