The patch

spi: sh-msiof: Fix handling of write value for SISTR register

has been applied to the spi tree at

https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks, Mark

From 31a5fae4c5a009898da6d177901d5328051641ff Mon Sep 17 00:00:00 2001

From: Hiromitsu Yamasaki hiromitsu.yamasaki.ym@renesas.com Date: Wed, 5 Sep 2018 10:49:37 +0200 Subject: [PATCH] spi: sh-msiof: Fix handling of write value for SISTR register

This patch changes writing to the SISTR register according to the H/W user's manual.

The TDREQ bit and RDREQ bits of SISTR are read-only, and must be written their initial values of zero.

Signed-off-by: Hiromitsu Yamasaki hiromitsu.yamasaki.ym@renesas.com [geert: reword] Signed-off-by: Geert Uytterhoeven geert+renesas@glider.be Signed-off-by: Mark Brown broonie@kernel.org Cc: stable@vger.kernel.org --- drivers/spi/spi-sh-msiof.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c index bfe4e6d4f7bf..101cd6aae2ea 100644 --- a/drivers/spi/spi-sh-msiof.c +++ b/drivers/spi/spi-sh-msiof.c @@ -397,7 +397,8 @@ static void sh_msiof_spi_set_mode_regs(struct sh_msiof_spi_priv *p,

static void sh_msiof_reset_str(struct sh_msiof_spi_priv *p) { - sh_msiof_write(p, STR, sh_msiof_read(p, STR)); + sh_msiof_write(p, STR, + sh_msiof_read(p, STR) & ~(STR_TDREQ | STR_RDREQ)); }

static void sh_msiof_spi_write_fifo_8(struct sh_msiof_spi_priv *p,