* [PATCH 5.1 236/405] spi: Dont call spi_get_gpio_descs() before device name is set
[not found] <20190530030540.291644921@linuxfoundation.org>
@ 2019-05-30 3:03 ` Greg Kroah-Hartman
0 siblings, 0 replies; only message in thread
From: Greg Kroah-Hartman @ 2019-05-30 3:03 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Andrey Smirnov, Mark Brown,
Chris Healy, linux-spi, Sasha Levin
[ Upstream commit 0a919ae49223d32ac0e8be3494547fcd1e4aa0aa ]
Move code calling spi_get_gpio_descs() to happen after ctlr->dev's
name is set in order to have proper GPIO consumer names.
Before:
cat /sys/kernel/debug/gpio
gpiochip0: GPIOs 0-31, parent: platform/40049000.gpio, vf610-gpio:
gpio-6 ( |regulator-usb0-vbus ) out lo
gpiochip1: GPIOs 32-63, parent: platform/4004a000.gpio, vf610-gpio:
gpio-36 ( |scl ) in hi
gpio-37 ( |sda ) in hi
gpio-40 ( |(null) CS1 ) out lo
gpio-41 ( |(null) CS0 ) out lo ACTIVE LOW
gpio-42 ( |miso ) in hi
gpio-43 ( |mosi ) in lo
gpio-44 ( |sck ) out lo
After:
cat /sys/kernel/debug/gpio
gpiochip0: GPIOs 0-31, parent: platform/40049000.gpio, vf610-gpio:
gpio-6 ( |regulator-usb0-vbus ) out lo
gpiochip1: GPIOs 32-63, parent: platform/4004a000.gpio, vf610-gpio:
gpio-36 ( |scl ) in hi
gpio-37 ( |sda ) in hi
gpio-40 ( |spi0 CS1 ) out lo
gpio-41 ( |spi0 CS0 ) out lo ACTIVE LOW
gpio-42 ( |miso ) in hi
gpio-43 ( |mosi ) in lo
gpio-44 ( |sck ) out lo
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Chris Healy <cphealy@gmail.com>
Cc: linux-spi@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/spi/spi.c | 37 +++++++++++++++++++------------------
1 file changed, 19 insertions(+), 18 deletions(-)
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 93986f879b09e..d17f68775a4bb 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -2275,24 +2275,6 @@ int spi_register_controller(struct spi_controller *ctlr)
if (status)
return status;
- if (!spi_controller_is_slave(ctlr)) {
- if (ctlr->use_gpio_descriptors) {
- status = spi_get_gpio_descs(ctlr);
- if (status)
- return status;
- /*
- * A controller using GPIO descriptors always
- * supports SPI_CS_HIGH if need be.
- */
- ctlr->mode_bits |= SPI_CS_HIGH;
- } else {
- /* Legacy code path for GPIOs from DT */
- status = of_spi_register_master(ctlr);
- if (status)
- return status;
- }
- }
-
/* even if it's just one always-selected device, there must
* be at least one chipselect
*/
@@ -2349,6 +2331,25 @@ int spi_register_controller(struct spi_controller *ctlr)
* registration fails if the bus ID is in use.
*/
dev_set_name(&ctlr->dev, "spi%u", ctlr->bus_num);
+
+ if (!spi_controller_is_slave(ctlr)) {
+ if (ctlr->use_gpio_descriptors) {
+ status = spi_get_gpio_descs(ctlr);
+ if (status)
+ return status;
+ /*
+ * A controller using GPIO descriptors always
+ * supports SPI_CS_HIGH if need be.
+ */
+ ctlr->mode_bits |= SPI_CS_HIGH;
+ } else {
+ /* Legacy code path for GPIOs from DT */
+ status = of_spi_register_master(ctlr);
+ if (status)
+ return status;
+ }
+ }
+
status = device_add(&ctlr->dev);
if (status < 0) {
/* free bus id */
--
2.20.1
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2019-05-30 3:03 ` [PATCH 5.1 236/405] spi: Dont call spi_get_gpio_descs() before device name is set Greg Kroah-Hartman
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