[PATCH] dcdbas: dcdbas_pdev referenced after platform_device_unregister on exit

smi_data_buf_free() references dcdbas_pdev when calling
dma_free_coherent().  In dcdbas_exit(), smi_data_buf_free() is called after
platform_device_unregister(dcdbas_pdev).

This patch moves platform_device_unregister(dcdbas_pdev) after
smi_data_buf_free() in dcdbas_exit().

Signed-off-by: Doug Warzecha <Douglas_Warzecha@dell.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/firmware/dcdbas.c b/drivers/firmware/dcdbas.c
index 8ed6ddb..4652512 100644 (file)
--- a/drivers/firmware/dcdbas.c
+++ b/drivers/firmware/dcdbas.c
@@ -39,7 +39,7 @@
 #include "dcdbas.h"
 
 #define DRIVER_NAME            "dcdbas"
-#define DRIVER_VERSION         "5.6.0-1"
+#define DRIVER_VERSION         "5.6.0-2"
 #define DRIVER_DESCRIPTION     "Dell Systems Management Base Driver"
 
 static struct platform_device *dcdbas_pdev;
@@ -581,9 +581,13 @@ static int __init dcdbas_init(void)
  */
 static void __exit dcdbas_exit(void)
 {
-       platform_device_unregister(dcdbas_pdev);
+       /*
+        * make sure functions that use dcdbas_pdev are called
+        * before platform_device_unregister
+        */
        unregister_reboot_notifier(&dcdbas_reboot_nb);
        smi_data_buf_free();
+       platform_device_unregister(dcdbas_pdev);
 }
 
 module_init(dcdbas_init);