[PATCH 0/2] spi: spidev: Fix messages in spidev

[PATCH 0/2] spi: spidev: Fix messages in spidev

[Oleksandr Suvorov]

- fix the values source for the xfer debug message.
- fix the "max speed setting" message showing.



Oleksandr Suvorov (2):
  spi: spidev: fix a debug message value
  spi: spidev: fix speed setting message

 drivers/spi/spidev.c | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

-- 
2.24.1

[PATCH 1/2] spi: spidev: fix a debug message value

[Oleksandr Suvorov]

The debug message in spidev_message() can show wrong xfer speed.
It happens if the initial (came from DT) and set with ioctl call spidev
speeds are different (spidev->speed_hz != spi->max_speed_hz) and one
sends a message with ioctl call and the field of speed is uninitialized
(u_tmp->speed_hz == 0).

In this case the kernel shows the spi->max_speed_hz value instead of
correct spidev->speed_hz.
...
set the max speed with an ioctl call:
[ 1227.702714] spidev spi0.0: setup mode 0, 32 bits/w, 20000000 Hz max --> 0
(real speed sets to 20000000Hz)
send a message with an ioctl call:
[ 1227.731801] spidev spi0.0:   xfer len 4096 tx 32bits 0 usec 10000000Hz
(debug message shows 10000000Hz that is the original max speed of this
spidev came from DT)
...

Fix the data source for the debug message.

Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov-2KBjVHiyJgBBDgjK7y7TUQ@public.gmane.org>
---

 drivers/spi/spidev.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index 2ab6e782f14c..c97e853dbf5c 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -275,14 +275,14 @@ static int spidev_message(struct spidev_data *spidev,
 #ifdef VERBOSE
 		dev_dbg(&spidev->spi->dev,
 			"  xfer len %u %s%s%s%dbits %u usec %u usec %uHz\n",
-			u_tmp->len,
-			u_tmp->rx_buf ? "rx " : "",
-			u_tmp->tx_buf ? "tx " : "",
-			u_tmp->cs_change ? "cs " : "",
-			u_tmp->bits_per_word ? : spidev->spi->bits_per_word,
-			u_tmp->delay_usecs,
-			u_tmp->word_delay_usecs,
-			u_tmp->speed_hz ? : spidev->spi->max_speed_hz);
+			k_tmp->len,
+			k_tmp->rx_buf ? "rx " : "",
+			k_tmp->tx_buf ? "tx " : "",
+			k_tmp->cs_change ? "cs " : "",
+			k_tmp->bits_per_word ? : spidev->spi->bits_per_word,
+			k_tmp->delay.value,
+			k_tmp->word_delay.value,
+			k_tmp->speed_hz ? : spidev->spi->max_speed_hz);
 #endif
 		spi_message_add_tail(k_tmp, &msg);
 	}
-- 
2.24.1

Applied "spi: spidev: fix a debug message value" to the spi tree

[Mark Brown]

The patch

   spi: spidev: fix a debug message value

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 ea70fb5b3e8b795730ab5716592bb573648434bb Mon Sep 17 00:00:00 2001
From: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Date: Sat, 29 Feb 2020 18:18:40 +0200
Subject: [PATCH] spi: spidev: fix a debug message value

The debug message in spidev_message() can show wrong xfer speed.
It happens if the initial (came from DT) and set with ioctl call spidev
speeds are different (spidev->speed_hz != spi->max_speed_hz) and one
sends a message with ioctl call and the field of speed is uninitialized
(u_tmp->speed_hz == 0).

In this case the kernel shows the spi->max_speed_hz value instead of
correct spidev->speed_hz.
...
set the max speed with an ioctl call:
[ 1227.702714] spidev spi0.0: setup mode 0, 32 bits/w, 20000000 Hz max --> 0
(real speed sets to 20000000Hz)
send a message with an ioctl call:
[ 1227.731801] spidev spi0.0:   xfer len 4096 tx 32bits 0 usec 10000000Hz
(debug message shows 10000000Hz that is the original max speed of this
spidev came from DT)
...

Fix the data source for the debug message.

Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Link: https://lore.kernel.org/r/20200229161841.89144-2-oleksandr.suvorov@toradex.com
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 drivers/spi/spidev.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index 2ab6e782f14c..c97e853dbf5c 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -275,14 +275,14 @@ static int spidev_message(struct spidev_data *spidev,
 #ifdef VERBOSE
 		dev_dbg(&spidev->spi->dev,
 			"  xfer len %u %s%s%s%dbits %u usec %u usec %uHz\n",
-			u_tmp->len,
-			u_tmp->rx_buf ? "rx " : "",
-			u_tmp->tx_buf ? "tx " : "",
-			u_tmp->cs_change ? "cs " : "",
-			u_tmp->bits_per_word ? : spidev->spi->bits_per_word,
-			u_tmp->delay_usecs,
-			u_tmp->word_delay_usecs,
-			u_tmp->speed_hz ? : spidev->spi->max_speed_hz);
+			k_tmp->len,
+			k_tmp->rx_buf ? "rx " : "",
+			k_tmp->tx_buf ? "tx " : "",
+			k_tmp->cs_change ? "cs " : "",
+			k_tmp->bits_per_word ? : spidev->spi->bits_per_word,
+			k_tmp->delay.value,
+			k_tmp->word_delay.value,
+			k_tmp->speed_hz ? : spidev->spi->max_speed_hz);
 #endif
 		spi_message_add_tail(k_tmp, &msg);
 	}
-- 
2.20.1

[PATCH 2/2] spi: spidev: fix speed setting message

[Oleksandr Suvorov]

The message of max device speed setting is shown when
an error in spi_setup() occurs.
Instead, it should be shown when the setup call succeeds.

Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov-2KBjVHiyJgBBDgjK7y7TUQ@public.gmane.org>
---

 drivers/spi/spidev.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index c97e853dbf5c..80dd1025b953 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -454,10 +454,11 @@ spidev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 
 			spi->max_speed_hz = tmp;
 			retval = spi_setup(spi);
-			if (retval >= 0)
+			if (retval == 0) {
 				spidev->speed_hz = tmp;
-			else
-				dev_dbg(&spi->dev, "%d Hz (max)\n", tmp);
+				dev_dbg(&spi->dev, "%d Hz (max)\n",
+					spidev->speed_hz);
+			}
 			spi->max_speed_hz = save;
 		}
 		break;
-- 
2.24.1

Applied "spi: spidev: fix speed setting message" to the spi tree

[Mark Brown]

The patch

   spi: spidev: fix speed setting message

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 4276fc82fc5d1aa24c6ad1a16fbaccf11fa61e02 Mon Sep 17 00:00:00 2001
From: Oleksandr Suvorov <oleksandr.suvorov-2KBjVHiyJgBBDgjK7y7TUQ@public.gmane.org>
Date: Sat, 29 Feb 2020 18:18:41 +0200
Subject: [PATCH] spi: spidev: fix speed setting message

The message of max device speed setting is shown when
an error in spi_setup() occurs.
Instead, it should be shown when the setup call succeeds.

Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov-2KBjVHiyJgBBDgjK7y7TUQ@public.gmane.org>
Link: https://lore.kernel.org/r/20200229161841.89144-3-oleksandr.suvorov-2KBjVHiyJgBBDgjK7y7TUQ@public.gmane.org
Signed-off-by: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
 drivers/spi/spidev.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index c97e853dbf5c..80dd1025b953 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -454,10 +454,11 @@ spidev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 
 			spi->max_speed_hz = tmp;
 			retval = spi_setup(spi);
-			if (retval >= 0)
+			if (retval == 0) {
 				spidev->speed_hz = tmp;
-			else
-				dev_dbg(&spi->dev, "%d Hz (max)\n", tmp);
+				dev_dbg(&spi->dev, "%d Hz (max)\n",
+					spidev->speed_hz);
+			}
 			spi->max_speed_hz = save;
 		}
 		break;
-- 
2.20.1