| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Tue, 10 Dec 2019 16:05:15 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Thor Thayer <thor.thayer@...ux.intel.com>,
Mark Brown <broonie@...nel.org>,
Sasha Levin <sashal@...nel.org>, linux-spi@...r.kernel.org
Subject: [PATCH AUTOSEL 5.4 210/350] spi: dw: Fix Designware SPI loopback
From: Thor Thayer <thor.thayer@...ux.intel.com>
[ Upstream commit 1403cfa69d310781f9548951c97725c67ffcf613 ]
The SPI_LOOP is set in spi->mode but not propagated to the register.
A previous patch removed the bit during a cleanup.
Fixes: e1bc204894ea ("spi: dw: fix potential variable assignment error")
Signed-off-by: Thor Thayer <thor.thayer@...ux.intel.com>
Link: https://lore.kernel.org/r/1572985330-5525-1-git-send-email-thor.thayer@linux.intel.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/spi/spi-dw.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
index 9a49e073e8b73..076652d3d051e 100644
--- a/drivers/spi/spi-dw.c
+++ b/drivers/spi/spi-dw.c
@@ -308,7 +308,8 @@ static int dw_spi_transfer_one(struct spi_controller *master,
cr0 = (transfer->bits_per_word - 1)
| (chip->type << SPI_FRF_OFFSET)
| ((((spi->mode & SPI_CPOL) ? 1 : 0) << SPI_SCOL_OFFSET) |
- (((spi->mode & SPI_CPHA) ? 1 : 0) << SPI_SCPH_OFFSET))
+ (((spi->mode & SPI_CPHA) ? 1 : 0) << SPI_SCPH_OFFSET) |
+ (((spi->mode & SPI_LOOP) ? 1 : 0) << SPI_SRL_OFFSET))
| (chip->tmode << SPI_TMOD_OFFSET);
/*
--
2.20.1
Powered by blists - more mailing lists