Hi Boris, On Thu, Sep 7, 2017 at 1:37 PM, Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx> wrote: > On Thu, 7 Sep 2017 10:00:50 +0200 > Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote: >> Instead of having buffers on the stack, passing them around through multiple >> call levels, and then kmalloc()ing a buffer, what about using the helpers in >> <linux/spi/spi.h> instead, which take care of the issue through the >> static bounce >> buffer or kmalloc() themselves? > > Are you referring to spi_write_then_read()? If this is the case, I'm not For example. There are more of them. > sure we can use this because m25p80_read/write() can have more than 2 > transfers. OK.More than two transfers may need special handling. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds