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55 lines
1.6 KiB
Diff
55 lines
1.6 KiB
Diff
From 227c693741ce1fbf0ad146c87f03369334941f2e Mon Sep 17 00:00:00 2001
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From: Stuart Yoder <stuart.yoder@nxp.com>
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Date: Wed, 22 Jun 2016 16:40:42 -0500
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Subject: [PATCH 179/226] staging: fsl-mc: add support for the modalias sysfs
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attribute
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In order to support uevent based module loading implement modalias support
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for the fsl-mc bus driver. Aliases are based on vendor and object/device
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id and are of the form "fsl-mc:vNdN".
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Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com>
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Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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---
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drivers/staging/fsl-mc/bus/mc-bus.c | 25 +++++++++++++++++++++++++
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1 file changed, 25 insertions(+)
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--- a/drivers/staging/fsl-mc/bus/mc-bus.c
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+++ b/drivers/staging/fsl-mc/bus/mc-bus.c
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@@ -82,10 +82,35 @@ static int fsl_mc_bus_uevent(struct devi
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return 0;
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}
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+static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
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+ char *buf)
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+{
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+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
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+
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+ return sprintf(buf, "fsl-mc:v%08Xd%s\n", mc_dev->obj_desc.vendor,
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+ mc_dev->obj_desc.type);
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+}
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+static DEVICE_ATTR_RO(modalias);
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+
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+static struct attribute *fsl_mc_dev_attrs[] = {
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+ &dev_attr_modalias.attr,
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+ NULL,
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+};
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+
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+static const struct attribute_group fsl_mc_dev_group = {
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+ .attrs = fsl_mc_dev_attrs,
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+};
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+
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+static const struct attribute_group *fsl_mc_dev_groups[] = {
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+ &fsl_mc_dev_group,
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+ NULL,
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+};
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+
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struct bus_type fsl_mc_bus_type = {
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.name = "fsl-mc",
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.match = fsl_mc_bus_match,
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.uevent = fsl_mc_bus_uevent,
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+ .dev_groups = fsl_mc_dev_groups,
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};
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EXPORT_SYMBOL_GPL(fsl_mc_bus_type);
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