FAILED: patch "[PATCH] spi: tegra114: Don't fail set_cs_timing when delays are zero" failed to apply to 5.15-stable tree
The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 4426e6b4ecf632bb75d973051e1179b8bfac2320 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2025050535-ducking-playroom-1844@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 4426e6b4ecf632bb75d973051e1179b8bfac2320 Mon Sep 17 00:00:00 2001 From: Aaron Kling webgeek1234@gmail.com Date: Wed, 23 Apr 2025 21:03:03 -0500 Subject: [PATCH] spi: tegra114: Don't fail set_cs_timing when delays are zero
The original code would skip null delay pointers, but when the pointers were converted to point within the spi_device struct, the check was not updated to skip delays of zero. Hence all spi devices that didn't set delays would fail to probe.
Fixes: 04e6bb0d6bb1 ("spi: modify set_cs_timing parameter") Cc: stable@vger.kernel.org Signed-off-by: Aaron Kling webgeek1234@gmail.com Link: https://patch.msgid.link/20250423-spi-tegra114-v1-1-2d608bcc12f9@gmail.com Signed-off-by: Mark Brown broonie@kernel.org
diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c index 3822d7c8d8ed..2a8bb798e95b 100644 --- a/drivers/spi/spi-tegra114.c +++ b/drivers/spi/spi-tegra114.c @@ -728,9 +728,9 @@ static int tegra_spi_set_hw_cs_timing(struct spi_device *spi) u32 inactive_cycles; u8 cs_state;
- if (setup->unit != SPI_DELAY_UNIT_SCK || - hold->unit != SPI_DELAY_UNIT_SCK || - inactive->unit != SPI_DELAY_UNIT_SCK) { + if ((setup->unit && setup->unit != SPI_DELAY_UNIT_SCK) || + (hold->unit && hold->unit != SPI_DELAY_UNIT_SCK) || + (inactive->unit && inactive->unit != SPI_DELAY_UNIT_SCK)) { dev_err(&spi->dev, "Invalid delay unit %d, should be SPI_DELAY_UNIT_SCK\n", SPI_DELAY_UNIT_SCK);
From: Alexander Danilenko al.b.danilenko@gmail.com
[ Upstream commit 373c36bf7914e3198ac2654dede499f340c52950 ]
cs_setup, cs_hold and cs_inactive points to fields of spi_device struct, so there is no sense in checking them for NULL.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 04e6bb0d6bb1 ("spi: modify set_cs_timing parameter") Signed-off-by: Alexander Danilenko al.b.danilenko@gmail.com Link: https://lore.kernel.org/r/20230815092058.4083-1-al.b.danilenko@gmail.com Signed-off-by: Mark Brown broonie@kernel.org Stable-dep-of: 4426e6b4ecf6 ("spi: tegra114: Don't fail set_cs_timing when delays are zero") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/spi/spi-tegra114.c | 18 +++++++----------- 1 file changed, 7 insertions(+), 11 deletions(-)
diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c index 8f345247a8c32..b6f081227cbd4 100644 --- a/drivers/spi/spi-tegra114.c +++ b/drivers/spi/spi-tegra114.c @@ -723,27 +723,23 @@ static int tegra_spi_set_hw_cs_timing(struct spi_device *spi) struct spi_delay *setup = &spi->cs_setup; struct spi_delay *hold = &spi->cs_hold; struct spi_delay *inactive = &spi->cs_inactive; - u8 setup_dly, hold_dly, inactive_dly; + u8 setup_dly, hold_dly; u32 setup_hold; u32 spi_cs_timing; u32 inactive_cycles; u8 cs_state;
- if ((setup && setup->unit != SPI_DELAY_UNIT_SCK) || - (hold && hold->unit != SPI_DELAY_UNIT_SCK) || - (inactive && inactive->unit != SPI_DELAY_UNIT_SCK)) { + if (setup->unit != SPI_DELAY_UNIT_SCK || + hold->unit != SPI_DELAY_UNIT_SCK || + inactive->unit != SPI_DELAY_UNIT_SCK) { dev_err(&spi->dev, "Invalid delay unit %d, should be SPI_DELAY_UNIT_SCK\n", SPI_DELAY_UNIT_SCK); return -EINVAL; }
- setup_dly = setup ? setup->value : 0; - hold_dly = hold ? hold->value : 0; - inactive_dly = inactive ? inactive->value : 0; - - setup_dly = min_t(u8, setup_dly, MAX_SETUP_HOLD_CYCLES); - hold_dly = min_t(u8, hold_dly, MAX_SETUP_HOLD_CYCLES); + setup_dly = min_t(u8, setup->value, MAX_SETUP_HOLD_CYCLES); + hold_dly = min_t(u8, hold->value, MAX_SETUP_HOLD_CYCLES); if (setup_dly && hold_dly) { setup_hold = SPI_SETUP_HOLD(setup_dly - 1, hold_dly - 1); spi_cs_timing = SPI_CS_SETUP_HOLD(tspi->spi_cs_timing1, @@ -755,7 +751,7 @@ static int tegra_spi_set_hw_cs_timing(struct spi_device *spi) } }
- inactive_cycles = min_t(u8, inactive_dly, MAX_INACTIVE_CYCLES); + inactive_cycles = min_t(u8, inactive->value, MAX_INACTIVE_CYCLES); if (inactive_cycles) inactive_cycles--; cs_state = inactive_cycles ? 0 : 1;
From: Aaron Kling webgeek1234@gmail.com
[ Upstream commit 4426e6b4ecf632bb75d973051e1179b8bfac2320 ]
The original code would skip null delay pointers, but when the pointers were converted to point within the spi_device struct, the check was not updated to skip delays of zero. Hence all spi devices that didn't set delays would fail to probe.
Fixes: 04e6bb0d6bb1 ("spi: modify set_cs_timing parameter") Cc: stable@vger.kernel.org Signed-off-by: Aaron Kling webgeek1234@gmail.com Link: https://patch.msgid.link/20250423-spi-tegra114-v1-1-2d608bcc12f9@gmail.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/spi/spi-tegra114.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c index b6f081227cbd4..af9ed52445fe6 100644 --- a/drivers/spi/spi-tegra114.c +++ b/drivers/spi/spi-tegra114.c @@ -729,9 +729,9 @@ static int tegra_spi_set_hw_cs_timing(struct spi_device *spi) u32 inactive_cycles; u8 cs_state;
- if (setup->unit != SPI_DELAY_UNIT_SCK || - hold->unit != SPI_DELAY_UNIT_SCK || - inactive->unit != SPI_DELAY_UNIT_SCK) { + if ((setup->unit && setup->unit != SPI_DELAY_UNIT_SCK) || + (hold->unit && hold->unit != SPI_DELAY_UNIT_SCK) || + (inactive->unit && inactive->unit != SPI_DELAY_UNIT_SCK)) { dev_err(&spi->dev, "Invalid delay unit %d, should be SPI_DELAY_UNIT_SCK\n", SPI_DELAY_UNIT_SCK);
linux-stable-mirror@lists.linaro.org
-
gregkh＠linuxfoundation.org -
Sasha Levin