On Thu, 2019-05-02 at 17:59 +0900, Akinobu Mita wrote: > Use memory_read_from_buffer() to simplify devcd_readv().
Reviewed-by: Johannes Berg <[email protected]> > Cc: Johannes Berg <[email protected]> > Cc: Keith Busch <[email protected]> > Cc: Jens Axboe <[email protected]> > Cc: Christoph Hellwig <[email protected]> > Cc: Sagi Grimberg <[email protected]> > Signed-off-by: Akinobu Mita <[email protected]> > --- > drivers/base/devcoredump.c | 11 +---------- > 1 file changed, 1 insertion(+), 10 deletions(-) > > diff --git a/drivers/base/devcoredump.c b/drivers/base/devcoredump.c > index f1a3353..3c960a6 100644 > --- a/drivers/base/devcoredump.c > +++ b/drivers/base/devcoredump.c > @@ -164,16 +164,7 @@ static struct class devcd_class = { > static ssize_t devcd_readv(char *buffer, loff_t offset, size_t count, > void *data, size_t datalen) > { > - if (offset > datalen) > - return -EINVAL; > - > - if (offset + count > datalen) > - count = datalen - offset; > - > - if (count) > - memcpy(buffer, ((u8 *)data) + offset, count); > - > - return count; > + return memory_read_from_buffer(buffer, count, &offset, data, datalen); > } > > static void devcd_freev(void *data)
