On Tue, Mar 29, 2022 at 07:55:39AM +0200, Fabio M. De Francesco wrote: > diff --git a/drivers/staging/rts5208/rtsx_transport.c b/drivers/staging/rts5208/rtsx_transport.c > index 805dc18fac0a..56b6cc845619 100644 > --- a/drivers/staging/rts5208/rtsx_transport.c > +++ b/drivers/staging/rts5208/rtsx_transport.c > @@ -92,13 +92,11 @@ unsigned int rtsx_stor_access_xfer_buf(unsigned char *buffer, > while (sglen > 0) { > unsigned int plen = min(sglen, (unsigned int) > PAGE_SIZE - poff); > - unsigned char *ptr = kmap(page); > > if (dir == TO_XFER_BUF) > - memcpy(ptr + poff, buffer + cnt, plen); > + memcpy_to_page(page + poff, 0, buffer + cnt, plen); You meant: memcpy_to_page(page, poff, buffer + cnt, plen); > else > - memcpy(buffer + cnt, ptr + poff, plen); > - kunmap(page); > + memcpy_from_page(buffer + cnt, page + poff, 0, plen); Same. regards, dan carpenter