[U-Boot] [PATCH 2/2] x86: ich-spi: Clear atomic preop only when SPI settings are not locked

The atomic preop register can only be written when SPI settings are not locked, otherwise it's read-only.

Signed-off-by: Bin Meng bmeng.cn@gmail.com ---

drivers/spi/ich.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/ich.c b/drivers/spi/ich.c index 5a3d690..22fc83d 100644 --- a/drivers/spi/ich.c +++ b/drivers/spi/ich.c @@ -563,7 +563,8 @@ static int ich_spi_xfer(struct udevice *dev, unsigned int bitlen, }

/* Clear atomic preop now that xfer is done */ - ich_writew(ctlr, 0, ctlr->preop); + if (!lock) + ich_writew(ctlr, 0, ctlr->preop);

return 0; }