June 2024 - Linux-stable-mirror

FAILED: patch "[PATCH] spi: cs42l43: Drop cs35l56 SPI speed down to 11MHz" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-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(a)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-6.1.y git checkout FETCH_HEAD git cherry-pick -x 60980cf5b8c8cc9182e5e9dbb62cbfd345c54074 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024062415-shakable-matching-e69e@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 60980cf5b8c8cc9182e5e9dbb62cbfd345c54074 Mon Sep 17 00:00:00 2001 From: Charles Keepax <ckeepax(a)opensource.cirrus.com> Date: Fri, 7 Jun 2024 11:34:23 +0100 Subject: [PATCH] spi: cs42l43: Drop cs35l56 SPI speed down to 11MHz Some internals of the cs35l56 can only support SPI speeds of up to 11MHz. Whilst some use-cases could support higher rates, keep things simple by dropping the SPI speed down to this avoid any potential issues. Signed-off-by: Charles Keepax <ckeepax(a)opensource.cirrus.com> Cc: stable(a)vger.kernel.org Link: https://lore.kernel.org/r/20240607103423.4159834-1-ckeepax@opensource.cirru… Signed-off-by: Mark Brown <broonie(a)kernel.org> diff --git a/drivers/spi/spi-cs42l43.c b/drivers/spi/spi-cs42l43.c index 902a0734cc36..8b618ef0f711 100644 --- a/drivers/spi/spi-cs42l43.c +++ b/drivers/spi/spi-cs42l43.c @@ -54,7 +54,7 @@ static const struct software_node ampr = { static struct spi_board_info ampl_info = { .modalias = "cs35l56", - .max_speed_hz = 20 * HZ_PER_MHZ, + .max_speed_hz = 11 * HZ_PER_MHZ, .chip_select = 0, .mode = SPI_MODE_0, .swnode = &ampl, @@ -62,7 +62,7 @@ static struct spi_board_info ampl_info = { static struct spi_board_info ampr_info = { .modalias = "cs35l56", - .max_speed_hz = 20 * HZ_PER_MHZ, + .max_speed_hz = 11 * HZ_PER_MHZ, .chip_select = 1, .mode = SPI_MODE_0, .swnode = &ampr,

9 months, 1 week

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FAILED: patch "[PATCH] spi: cs42l43: Drop cs35l56 SPI speed down to 11MHz" failed to apply to 6.9-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.9-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(a)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-6.9.y git checkout FETCH_HEAD git cherry-pick -x 60980cf5b8c8cc9182e5e9dbb62cbfd345c54074 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024062414-convent-usage-bb3a@gregkh' --subject-prefix 'PATCH 6.9.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 60980cf5b8c8cc9182e5e9dbb62cbfd345c54074 Mon Sep 17 00:00:00 2001 From: Charles Keepax <ckeepax(a)opensource.cirrus.com> Date: Fri, 7 Jun 2024 11:34:23 +0100 Subject: [PATCH] spi: cs42l43: Drop cs35l56 SPI speed down to 11MHz Some internals of the cs35l56 can only support SPI speeds of up to 11MHz. Whilst some use-cases could support higher rates, keep things simple by dropping the SPI speed down to this avoid any potential issues. Signed-off-by: Charles Keepax <ckeepax(a)opensource.cirrus.com> Cc: stable(a)vger.kernel.org Link: https://lore.kernel.org/r/20240607103423.4159834-1-ckeepax@opensource.cirru… Signed-off-by: Mark Brown <broonie(a)kernel.org> diff --git a/drivers/spi/spi-cs42l43.c b/drivers/spi/spi-cs42l43.c index 902a0734cc36..8b618ef0f711 100644 --- a/drivers/spi/spi-cs42l43.c +++ b/drivers/spi/spi-cs42l43.c @@ -54,7 +54,7 @@ static const struct software_node ampr = { static struct spi_board_info ampl_info = { .modalias = "cs35l56", - .max_speed_hz = 20 * HZ_PER_MHZ, + .max_speed_hz = 11 * HZ_PER_MHZ, .chip_select = 0, .mode = SPI_MODE_0, .swnode = &ampl, @@ -62,7 +62,7 @@ static struct spi_board_info ampl_info = { static struct spi_board_info ampr_info = { .modalias = "cs35l56", - .max_speed_hz = 20 * HZ_PER_MHZ, + .max_speed_hz = 11 * HZ_PER_MHZ, .chip_select = 1, .mode = SPI_MODE_0, .swnode = &ampr,

9 months, 1 week

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FAILED: patch "[PATCH] dt-bindings: i2c: atmel,at91sam: correct path to" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-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(a)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-6.1.y git checkout FETCH_HEAD git cherry-pick -x d4e001ffeccfc128c715057e866f301ac9b95728 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024062426-sleeve-manicure-e52d@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From d4e001ffeccfc128c715057e866f301ac9b95728 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> Date: Thu, 20 Jun 2024 13:34:49 +0200 Subject: [PATCH] dt-bindings: i2c: atmel,at91sam: correct path to i2c-controller schema The referenced i2c-controller.yaml schema is provided by dtschema package (outside of Linux kernel), so use full path to reference it. Cc: stable(a)vger.kernel.org Fixes: 7ea75dd386be ("dt-bindings: i2c: convert i2c-at91 to json-schema") Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> Reviewed-by: Conor Dooley <conor.dooley(a)microchip.com> Signed-off-by: Andi Shyti <andi.shyti(a)kernel.org> diff --git a/Documentation/devicetree/bindings/i2c/atmel,at91sam-i2c.yaml b/Documentation/devicetree/bindings/i2c/atmel,at91sam-i2c.yaml index b1c13bab2472..b2d19cfb87ad 100644 --- a/Documentation/devicetree/bindings/i2c/atmel,at91sam-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/atmel,at91sam-i2c.yaml @@ -77,7 +77,7 @@ required: - clocks allOf: - - $ref: i2c-controller.yaml + - $ref: /schemas/i2c/i2c-controller.yaml# - if: properties: compatible:

9 months, 1 week

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FAILED: patch "[PATCH] i2c: ocores: set IACK bit after core is enabled" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-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(a)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-4.19.y git checkout FETCH_HEAD git cherry-pick -x 5a72477273066b5b357801ab2d315ef14949d402 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024062412-mobster-doable-acc6@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 5a72477273066b5b357801ab2d315ef14949d402 Mon Sep 17 00:00:00 2001 From: Grygorii Tertychnyi <grembeter(a)gmail.com> Date: Mon, 20 May 2024 17:39:32 +0200 Subject: [PATCH] i2c: ocores: set IACK bit after core is enabled Setting IACK bit when core is disabled does not clear the "Interrupt Flag" bit in the status register, and the interrupt remains pending. Sometimes it causes failure for the very first message transfer, that is usually a device probe. Hence, set IACK bit after core is enabled to clear pending interrupt. Fixes: 18f98b1e3147 ("[PATCH] i2c: New bus driver for the OpenCores I2C controller") Signed-off-by: Grygorii Tertychnyi <grygorii.tertychnyi(a)leica-geosystems.com> Acked-by: Peter Korsgaard <peter(a)korsgaard.com> Cc: stable(a)vger.kernel.org Signed-off-by: Andi Shyti <andi.shyti(a)kernel.org> diff --git a/drivers/i2c/busses/i2c-ocores.c b/drivers/i2c/busses/i2c-ocores.c index 56a4dabf5a38..4ad670a80a63 100644 --- a/drivers/i2c/busses/i2c-ocores.c +++ b/drivers/i2c/busses/i2c-ocores.c @@ -431,8 +431,8 @@ static int ocores_init(struct device *dev, struct ocores_i2c *i2c) oc_setreg(i2c, OCI2C_PREHIGH, prescale >> 8); /* Init the device */ - oc_setreg(i2c, OCI2C_CMD, OCI2C_CMD_IACK); oc_setreg(i2c, OCI2C_CONTROL, ctrl | OCI2C_CTRL_EN); + oc_setreg(i2c, OCI2C_CMD, OCI2C_CMD_IACK); return 0; }

9 months, 1 week

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FAILED: patch "[PATCH] pwm: stm32: Refuse too small period requests" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-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(a)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-4.19.y git checkout FETCH_HEAD git cherry-pick -x c45fcf46ca2368dafe7e5c513a711a6f0f974308 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024062459-ebay-electable-e94e@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From c45fcf46ca2368dafe7e5c513a711a6f0f974308 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig(a)baylibre.com> Date: Fri, 21 Jun 2024 16:37:12 +0200 Subject: [PATCH] pwm: stm32: Refuse too small period requests MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If period_ns is small, prd might well become 0. Catch that case because otherwise with regmap_write(priv->regmap, TIM_ARR, prd - 1); a few lines down quite a big period is configured. Fixes: 7edf7369205b ("pwm: Add driver for STM32 plaftorm") Cc: stable(a)vger.kernel.org Reviewed-by: Trevor Gamblin <tgamblin(a)baylibre.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig(a)baylibre.com> Link: https://lore.kernel.org/r/b86f62f099983646f97eeb6bfc0117bb2d0c340d.17189791… Signed-off-by: Uwe Kleine-König <ukleinek(a)kernel.org> diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c index a2f231d13a9f..3e7b2a8e34e7 100644 --- a/drivers/pwm/pwm-stm32.c +++ b/drivers/pwm/pwm-stm32.c @@ -337,6 +337,8 @@ static int stm32_pwm_config(struct stm32_pwm *priv, unsigned int ch, prd = mul_u64_u64_div_u64(period_ns, clk_get_rate(priv->clk), (u64)NSEC_PER_SEC * (prescaler + 1)); + if (!prd) + return -EINVAL; /* * All channels share the same prescaler and counter so when two

9 months, 1 week

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FAILED: patch "[PATCH] pwm: stm32: Refuse too small period requests" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-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(a)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-5.4.y git checkout FETCH_HEAD git cherry-pick -x c45fcf46ca2368dafe7e5c513a711a6f0f974308 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024062458-try-bouncing-bb82@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From c45fcf46ca2368dafe7e5c513a711a6f0f974308 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig(a)baylibre.com> Date: Fri, 21 Jun 2024 16:37:12 +0200 Subject: [PATCH] pwm: stm32: Refuse too small period requests MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If period_ns is small, prd might well become 0. Catch that case because otherwise with regmap_write(priv->regmap, TIM_ARR, prd - 1); a few lines down quite a big period is configured. Fixes: 7edf7369205b ("pwm: Add driver for STM32 plaftorm") Cc: stable(a)vger.kernel.org Reviewed-by: Trevor Gamblin <tgamblin(a)baylibre.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig(a)baylibre.com> Link: https://lore.kernel.org/r/b86f62f099983646f97eeb6bfc0117bb2d0c340d.17189791… Signed-off-by: Uwe Kleine-König <ukleinek(a)kernel.org> diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c index a2f231d13a9f..3e7b2a8e34e7 100644 --- a/drivers/pwm/pwm-stm32.c +++ b/drivers/pwm/pwm-stm32.c @@ -337,6 +337,8 @@ static int stm32_pwm_config(struct stm32_pwm *priv, unsigned int ch, prd = mul_u64_u64_div_u64(period_ns, clk_get_rate(priv->clk), (u64)NSEC_PER_SEC * (prescaler + 1)); + if (!prd) + return -EINVAL; /* * All channels share the same prescaler and counter so when two

9 months, 1 week

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FAILED: patch "[PATCH] pwm: stm32: Refuse too small period requests" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-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(a)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-5.10.y git checkout FETCH_HEAD git cherry-pick -x c45fcf46ca2368dafe7e5c513a711a6f0f974308 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024062457-reversal-unkind-166b@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From c45fcf46ca2368dafe7e5c513a711a6f0f974308 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig(a)baylibre.com> Date: Fri, 21 Jun 2024 16:37:12 +0200 Subject: [PATCH] pwm: stm32: Refuse too small period requests MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If period_ns is small, prd might well become 0. Catch that case because otherwise with regmap_write(priv->regmap, TIM_ARR, prd - 1); a few lines down quite a big period is configured. Fixes: 7edf7369205b ("pwm: Add driver for STM32 plaftorm") Cc: stable(a)vger.kernel.org Reviewed-by: Trevor Gamblin <tgamblin(a)baylibre.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig(a)baylibre.com> Link: https://lore.kernel.org/r/b86f62f099983646f97eeb6bfc0117bb2d0c340d.17189791… Signed-off-by: Uwe Kleine-König <ukleinek(a)kernel.org> diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c index a2f231d13a9f..3e7b2a8e34e7 100644 --- a/drivers/pwm/pwm-stm32.c +++ b/drivers/pwm/pwm-stm32.c @@ -337,6 +337,8 @@ static int stm32_pwm_config(struct stm32_pwm *priv, unsigned int ch, prd = mul_u64_u64_div_u64(period_ns, clk_get_rate(priv->clk), (u64)NSEC_PER_SEC * (prescaler + 1)); + if (!prd) + return -EINVAL; /* * All channels share the same prescaler and counter so when two

9 months, 1 week

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FAILED: patch "[PATCH] pwm: stm32: Refuse too small period requests" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

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(a)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 c45fcf46ca2368dafe7e5c513a711a6f0f974308 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024062457-irritant-squatter-ff51@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From c45fcf46ca2368dafe7e5c513a711a6f0f974308 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig(a)baylibre.com> Date: Fri, 21 Jun 2024 16:37:12 +0200 Subject: [PATCH] pwm: stm32: Refuse too small period requests MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If period_ns is small, prd might well become 0. Catch that case because otherwise with regmap_write(priv->regmap, TIM_ARR, prd - 1); a few lines down quite a big period is configured. Fixes: 7edf7369205b ("pwm: Add driver for STM32 plaftorm") Cc: stable(a)vger.kernel.org Reviewed-by: Trevor Gamblin <tgamblin(a)baylibre.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig(a)baylibre.com> Link: https://lore.kernel.org/r/b86f62f099983646f97eeb6bfc0117bb2d0c340d.17189791… Signed-off-by: Uwe Kleine-König <ukleinek(a)kernel.org> diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c index a2f231d13a9f..3e7b2a8e34e7 100644 --- a/drivers/pwm/pwm-stm32.c +++ b/drivers/pwm/pwm-stm32.c @@ -337,6 +337,8 @@ static int stm32_pwm_config(struct stm32_pwm *priv, unsigned int ch, prd = mul_u64_u64_div_u64(period_ns, clk_get_rate(priv->clk), (u64)NSEC_PER_SEC * (prescaler + 1)); + if (!prd) + return -EINVAL; /* * All channels share the same prescaler and counter so when two

9 months, 1 week

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FAILED: patch "[PATCH] pwm: stm32: Refuse too small period requests" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-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(a)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-6.1.y git checkout FETCH_HEAD git cherry-pick -x c45fcf46ca2368dafe7e5c513a711a6f0f974308 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024062456-unvocal-anyone-3135@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From c45fcf46ca2368dafe7e5c513a711a6f0f974308 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig(a)baylibre.com> Date: Fri, 21 Jun 2024 16:37:12 +0200 Subject: [PATCH] pwm: stm32: Refuse too small period requests MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If period_ns is small, prd might well become 0. Catch that case because otherwise with regmap_write(priv->regmap, TIM_ARR, prd - 1); a few lines down quite a big period is configured. Fixes: 7edf7369205b ("pwm: Add driver for STM32 plaftorm") Cc: stable(a)vger.kernel.org Reviewed-by: Trevor Gamblin <tgamblin(a)baylibre.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig(a)baylibre.com> Link: https://lore.kernel.org/r/b86f62f099983646f97eeb6bfc0117bb2d0c340d.17189791… Signed-off-by: Uwe Kleine-König <ukleinek(a)kernel.org> diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c index a2f231d13a9f..3e7b2a8e34e7 100644 --- a/drivers/pwm/pwm-stm32.c +++ b/drivers/pwm/pwm-stm32.c @@ -337,6 +337,8 @@ static int stm32_pwm_config(struct stm32_pwm *priv, unsigned int ch, prd = mul_u64_u64_div_u64(period_ns, clk_get_rate(priv->clk), (u64)NSEC_PER_SEC * (prescaler + 1)); + if (!prd) + return -EINVAL; /* * All channels share the same prescaler and counter so when two

9 months, 1 week

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FAILED: patch "[PATCH] pwm: stm32: Refuse too small period requests" failed to apply to 6.6-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.6-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(a)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-6.6.y git checkout FETCH_HEAD git cherry-pick -x c45fcf46ca2368dafe7e5c513a711a6f0f974308 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024062455-magnetism-backing-fbef@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From c45fcf46ca2368dafe7e5c513a711a6f0f974308 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig(a)baylibre.com> Date: Fri, 21 Jun 2024 16:37:12 +0200 Subject: [PATCH] pwm: stm32: Refuse too small period requests MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If period_ns is small, prd might well become 0. Catch that case because otherwise with regmap_write(priv->regmap, TIM_ARR, prd - 1); a few lines down quite a big period is configured. Fixes: 7edf7369205b ("pwm: Add driver for STM32 plaftorm") Cc: stable(a)vger.kernel.org Reviewed-by: Trevor Gamblin <tgamblin(a)baylibre.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig(a)baylibre.com> Link: https://lore.kernel.org/r/b86f62f099983646f97eeb6bfc0117bb2d0c340d.17189791… Signed-off-by: Uwe Kleine-König <ukleinek(a)kernel.org> diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c index a2f231d13a9f..3e7b2a8e34e7 100644 --- a/drivers/pwm/pwm-stm32.c +++ b/drivers/pwm/pwm-stm32.c @@ -337,6 +337,8 @@ static int stm32_pwm_config(struct stm32_pwm *priv, unsigned int ch, prd = mul_u64_u64_div_u64(period_ns, clk_get_rate(priv->clk), (u64)NSEC_PER_SEC * (prescaler + 1)); + if (!prd) + return -EINVAL; /* * All channels share the same prescaler and counter so when two

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