On 10/24/18 1:20 PM, Boris Brezillon wrote:
Hi Arnd, On Mon, 22 Oct 2018 15:34:01 +0200 Boris Brezillon <boris.brezil...@bootlin.com> wrote:+ +static void cdns_i3c_master_rd_from_rx_fifo(struct cdns_i3c_master *master, + u8 *bytes, int nbytes) +{ + readsl(master->regs + RX_FIFO, bytes, nbytes / 4);Vitor reported a problem with readsl(): this function expects the 2nd argument to be aligned on 32-bit, which is not guaranteed here. Unless you see a better solution, I'll switch back to a loop doing: for (i = 0; i < nbytes; i += 4) { u32 tmp = __raw_readl(...);
Pls, do not use __raw io.
memcpy(bytes + i, &tmp, nbytes - i > 4 ? 4 : nbytes - i); }+ if (nbytes & 3) { + u32 tmp; + + readsl(master->regs + RX_FIFO, &tmp, 1); + memcpy(bytes + (nbytes & ~3), &tmp, nbytes & 3); + } +}Regards, Boris
-- regards, -grygorii
