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path: root/drivers/firmware/google/memconsole-coreboot.c
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Diffstat (limited to 'drivers/firmware/google/memconsole-coreboot.c')
-rw-r--r--drivers/firmware/google/memconsole-coreboot.c28
1 files changed, 7 insertions, 21 deletions
diff --git a/drivers/firmware/google/memconsole-coreboot.c b/drivers/firmware/google/memconsole-coreboot.c
index ac90e8536565..fd7f0fbec07e 100644
--- a/drivers/firmware/google/memconsole-coreboot.c
+++ b/drivers/firmware/google/memconsole-coreboot.c
@@ -8,6 +8,7 @@
*/
#include <linux/device.h>
+#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
@@ -26,7 +27,7 @@ struct cbmem_cons {
#define CURSOR_MASK ((1 << 28) - 1)
#define OVERFLOW (1 << 31)
-static struct cbmem_cons __iomem *cbmem_console;
+static struct cbmem_cons *cbmem_console;
static u32 cbmem_console_size;
/*
@@ -67,7 +68,7 @@ static ssize_t memconsole_coreboot_read(char *buf, loff_t pos, size_t count)
static int memconsole_probe(struct coreboot_device *dev)
{
- struct cbmem_cons __iomem *tmp_cbmc;
+ struct cbmem_cons *tmp_cbmc;
tmp_cbmc = memremap(dev->cbmem_ref.cbmem_addr,
sizeof(*tmp_cbmc), MEMREMAP_WB);
@@ -77,13 +78,13 @@ static int memconsole_probe(struct coreboot_device *dev)
/* Read size only once to prevent overrun attack through /dev/mem. */
cbmem_console_size = tmp_cbmc->size_dont_access_after_boot;
- cbmem_console = memremap(dev->cbmem_ref.cbmem_addr,
+ cbmem_console = devm_memremap(&dev->dev, dev->cbmem_ref.cbmem_addr,
cbmem_console_size + sizeof(*cbmem_console),
MEMREMAP_WB);
memunmap(tmp_cbmc);
- if (!cbmem_console)
- return -ENOMEM;
+ if (IS_ERR(cbmem_console))
+ return PTR_ERR(cbmem_console);
memconsole_setup(memconsole_coreboot_read);
@@ -94,9 +95,6 @@ static int memconsole_remove(struct coreboot_device *dev)
{
memconsole_exit();
- if (cbmem_console)
- memunmap(cbmem_console);
-
return 0;
}
@@ -108,19 +106,7 @@ static struct coreboot_driver memconsole_driver = {
},
.tag = CB_TAG_CBMEM_CONSOLE,
};
-
-static void coreboot_memconsole_exit(void)
-{
- coreboot_driver_unregister(&memconsole_driver);
-}
-
-static int __init coreboot_memconsole_init(void)
-{
- return coreboot_driver_register(&memconsole_driver);
-}
-
-module_exit(coreboot_memconsole_exit);
-module_init(coreboot_memconsole_init);
+module_coreboot_driver(memconsole_driver);
MODULE_AUTHOR("Google, Inc.");
MODULE_LICENSE("GPL");