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Groups > linux.kernel > #1234902
| From | Tomeu Vizoso <tomeu.vizoso@collabora.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v7 11/20] pwm: Probe PWM chip devices on demand |
| Date | 2015-09-29 11:20 +0200 |
| Message-ID | <qdZeQ-2b3-47@gated-at.bofh.it> (permalink) |
| References | <qdZeN-2b3-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
When looking up a PWM chip through its OF node, probe it if it hasn't
already.
The goal is to reduce deferred probes to a minimum, as it makes it very
cumbersome to find out why a device failed to probe, and can introduce
very big delays in when a critical device is probed.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
---
drivers/pwm/core.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 3f9df3ea3350..794a923df0d8 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -29,6 +29,7 @@
#include <linux/device.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
+#include <linux/of_device.h>
#include <dt-bindings/pwm/pwm.h>
@@ -516,6 +517,8 @@ static struct pwm_chip *of_node_to_pwmchip(struct device_node *np)
{
struct pwm_chip *chip;
+ of_device_probe(np);
+
mutex_lock(&pwm_lock);
list_for_each_entry(chip, &pwm_chips, list)
--
2.4.3
--
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[PATCH v7 0/20] On-demand device probing Tomeu Vizoso <tomeu.vizoso@collabora.com> - 2015-09-29 11:20 +0200 [PATCH v7 20/20] of/platform: Defer probes of registered devices Tomeu Vizoso <tomeu.vizoso@collabora.com> - 2015-09-29 11:20 +0200 [PATCH v7 13/20] usb: phy: Probe phy devices on demand Tomeu Vizoso <tomeu.vizoso@collabora.com> - 2015-09-29 11:20 +0200 [PATCH v7 09/20] drm/tegra: Probe dpaux devices on demand Tomeu Vizoso <tomeu.vizoso@collabora.com> - 2015-09-29 11:20 +0200 [PATCH v7 15/20] pinctrl: Probe pinctrl devices on demand Tomeu Vizoso <tomeu.vizoso@collabora.com> - 2015-09-29 11:20 +0200 [PATCH v7 06/20] pinctrl: Probe pinctrl devices on demand Tomeu Vizoso <tomeu.vizoso@collabora.com> - 2015-09-29 11:20 +0200 [PATCH v7 03/20] of/platform: Point to struct device from device node Tomeu Vizoso <tomeu.vizoso@collabora.com> - 2015-09-29 11:20 +0200 [PATCH v7 10/20] i2c: core: Probe i2c adapters and devices on demand Tomeu Vizoso <tomeu.vizoso@collabora.com> - 2015-09-29 11:20 +0200 [PATCH v7 17/20] dma: of: Probe DMA controllers on demand Tomeu Vizoso <tomeu.vizoso@collabora.com> - 2015-09-29 11:20 +0200 [PATCH v7 11/20] pwm: Probe PWM chip devices on demand Tomeu Vizoso <tomeu.vizoso@collabora.com> - 2015-09-29 11:20 +0200 [PATCH v7 07/20] regulator: core: Probe regulators on demand Tomeu Vizoso <tomeu.vizoso@collabora.com> - 2015-09-29 11:20 +0200 [PATCH v7 12/20] backlight: Probe backlight devices on demand Tomeu Vizoso <tomeu.vizoso@collabora.com> - 2015-09-29 11:20 +0200 [PATCH v7 04/20] of: add function to allow probing a device from a OF node Tomeu Vizoso <tomeu.vizoso@collabora.com> - 2015-09-29 11:20 +0200
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