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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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0634c29589
The modalias sysfs attr is lacking a newline for DT aliases on platform devices. The macio and ibmebus correctly add the newline, but open code it. Introduce a new function, of_device_modalias(), that fills the buffer with the modalias including the newline and update users of the old of_device_get_modalias function. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Frank Rowand <frowand.list@gmail.com> Cc: linuxppc-dev@lists.ozlabs.org Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
#include <linux/kernel.h>
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#include <linux/stat.h>
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#include <asm/macio.h>
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#define macio_config_of_attr(field, format_string) \
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static ssize_t \
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field##_show (struct device *dev, struct device_attribute *attr, \
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char *buf) \
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{ \
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struct macio_dev *mdev = to_macio_device (dev); \
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return sprintf (buf, format_string, mdev->ofdev.dev.of_node->field); \
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}
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static ssize_t
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compatible_show (struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct platform_device *of;
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const char *compat;
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int cplen;
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int length = 0;
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of = &to_macio_device (dev)->ofdev;
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compat = of_get_property(of->dev.of_node, "compatible", &cplen);
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if (!compat) {
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*buf = '\0';
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return 0;
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}
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while (cplen > 0) {
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int l;
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length += sprintf (buf, "%s\n", compat);
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buf += length;
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l = strlen (compat) + 1;
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compat += l;
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cplen -= l;
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}
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return length;
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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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return of_device_modalias(dev, buf, PAGE_SIZE);
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}
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static ssize_t devspec_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct platform_device *ofdev;
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ofdev = to_platform_device(dev);
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return sprintf(buf, "%s\n", ofdev->dev.of_node->full_name);
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}
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macio_config_of_attr (name, "%s\n");
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macio_config_of_attr (type, "%s\n");
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struct device_attribute macio_dev_attrs[] = {
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__ATTR_RO(name),
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__ATTR_RO(type),
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__ATTR_RO(compatible),
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__ATTR_RO(modalias),
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__ATTR_RO(devspec),
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__ATTR_NULL
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};
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