From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
We need to save major device number to be able to use it for
unregister_chrdev() in ipc_module_exit().
ipc_module_init() must return 0 on success, not major device number.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Signed-off-by: Alan Cox <alan@xxxxxxxxxxxxxxx>
---
drivers/platform/x86/intel_scu_ipcutil.c | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/platform/x86/intel_scu_ipcutil.c b/drivers/platform/x86/intel_scu_ipcutil.c
index b93a032..2d0f913 100644
--- a/drivers/platform/x86/intel_scu_ipcutil.c
+++ b/drivers/platform/x86/intel_scu_ipcutil.c
@@ -24,7 +24,7 @@
#include <linux/init.h>
#include <asm/intel_scu_ipc.h>
-static u32 major;
+static int major;
#define MAX_FW_SIZE 264192
@@ -117,7 +117,11 @@ static const struct file_operations scu_ipc_fops = {
static int __init ipc_module_init(void)
{
- return register_chrdev(0, "intel_mid_scu", &scu_ipc_fops);
+ major = register_chrdev(0, "intel_mid_scu", &scu_ipc_fops);
+ if (major < 0)
+ return major;
+
+ return 0;
}
static void __exit ipc_module_exit(void)
--
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