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path: root/drivers/firmware/google/memconsole.c
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Diffstat (limited to 'drivers/firmware/google/memconsole.c')
-rw-r--r--drivers/firmware/google/memconsole.c14
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/firmware/google/memconsole.c b/drivers/firmware/google/memconsole.c
index 94e200ddb4fa..166f07c68c02 100644
--- a/drivers/firmware/google/memconsole.c
+++ b/drivers/firmware/google/memconsole.c
@@ -22,15 +22,15 @@
#include "memconsole.h"
-static char *memconsole_baseaddr;
-static size_t memconsole_length;
+static ssize_t (*memconsole_read_func)(char *, loff_t, size_t);
static ssize_t memconsole_read(struct file *filp, struct kobject *kobp,
struct bin_attribute *bin_attr, char *buf,
loff_t pos, size_t count)
{
- return memory_read_from_buffer(buf, count, &pos, memconsole_baseaddr,
- memconsole_length);
+ if (WARN_ON_ONCE(!memconsole_read_func))
+ return -EIO;
+ return memconsole_read_func(buf, pos, count);
}
static struct bin_attribute memconsole_bin_attr = {
@@ -38,16 +38,14 @@ static struct bin_attribute memconsole_bin_attr = {
.read = memconsole_read,
};
-void memconsole_setup(void *baseaddr, size_t length)
+void memconsole_setup(ssize_t (*read_func)(char *, loff_t, size_t))
{
- memconsole_baseaddr = baseaddr;
- memconsole_length = length;
+ memconsole_read_func = read_func;
}
EXPORT_SYMBOL(memconsole_setup);
int memconsole_sysfs_init(void)
{
- memconsole_bin_attr.size = memconsole_length;
return sysfs_create_bin_file(firmware_kobj, &memconsole_bin_attr);
}
EXPORT_SYMBOL(memconsole_sysfs_init);