Convert DRIVER_ATTR macros to DRIVER_ATTR_RO as requested by
Greg KH. Also switched to using sprintf as nothing printed should
exceed PAGE_SIZE - based on feedback from Greg when implementing
show functions for tape stats.
Suggested-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Shane Seymour <shane.seymour@xxxxxx>
---
This patch was implemented on top of the previous patch to
convert to using driver attr groups.
--- a/drivers/scsi/st.c 2015-06-22 20:38:16.061386739 -0500
+++ b/drivers/scsi/st.c 2015-06-23 17:29:03.547867682 -0500
@@ -4427,29 +4427,29 @@ module_exit(exit_st);
/* The sysfs driver interface. Read-only at the moment */
-static ssize_t st_try_direct_io_show(struct device_driver *ddp, char *buf)
+static ssize_t try_direct_io_show(struct device_driver *ddp, char *buf)
{
- return snprintf(buf, PAGE_SIZE, "%d\n", try_direct_io);
+ return sprintf(buf, "%d\n", try_direct_io);
}
-static DRIVER_ATTR(try_direct_io, S_IRUGO, st_try_direct_io_show, NULL);
+static DRIVER_ATTR_RO(try_direct_io);
-static ssize_t st_fixed_buffer_size_show(struct device_driver *ddp, char *buf)
+static ssize_t fixed_buffer_size_show(struct device_driver *ddp, char *buf)
{
- return snprintf(buf, PAGE_SIZE, "%d\n", st_fixed_buffer_size);
+ return sprintf(buf, "%d\n", st_fixed_buffer_size);
}
-static DRIVER_ATTR(fixed_buffer_size, S_IRUGO, st_fixed_buffer_size_show, NULL);
+static DRIVER_ATTR_RO(fixed_buffer_size);
-static ssize_t st_max_sg_segs_show(struct device_driver *ddp, char *buf)
+static ssize_t max_sg_segs_show(struct device_driver *ddp, char *buf)
{
- return snprintf(buf, PAGE_SIZE, "%d\n", st_max_sg_segs);
+ return sprintf(buf, "%d\n", st_max_sg_segs);
}
-static DRIVER_ATTR(max_sg_segs, S_IRUGO, st_max_sg_segs_show, NULL);
+static DRIVER_ATTR_RO(max_sg_segs);
-static ssize_t st_version_show(struct device_driver *ddd, char *buf)
+static ssize_t version_show(struct device_driver *ddd, char *buf)
{
- return snprintf(buf, PAGE_SIZE, "[%s]\n", verstr);
+ return sprintf(buf, "[%s]\n", verstr);
}
-static DRIVER_ATTR(version, S_IRUGO, st_version_show, NULL);
+static DRIVER_ATTR_RO(version);
static struct attribute *st_drv_attrs[] = {
&driver_attr_try_direct_io.attr,
--
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