- private_ioctl() internally calls copy_{to,from}_user() and does
not use '__user' which gives out several sparse warnings
- these sparse warnings were fixed by adding __user annotation to
the data member of struct tagSCmdRequest:
drivers/staging/vt6655/ioctl.c:78:51: warning: incorrect type in argument 2 (different address spaces)
drivers/staging/vt6655/ioctl.c:78:51: expected void const [noderef] asn:1>*from
drivers/staging/vt6655/ioctl.c:78:51: got void *data
Signed-off-by: Anil Belur <askb23@xxxxxxxxx>
---
v2:
- replaced the 'void __user *' casts by adding '__user' annotation to the data member of struct
tagSCmdRequest which is much cleaner approach as suggested by tklauser@xxxxxxxxxx
v1:
- added 'void __user *' casts to supress the warnings
drivers/staging/vt6655/iocmd.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/vt6655/iocmd.h b/drivers/staging/vt6655/iocmd.h
index e499f1b..dd12498 100644
--- a/drivers/staging/vt6655/iocmd.h
+++ b/drivers/staging/vt6655/iocmd.h
@@ -100,7 +100,7 @@ typedef enum tagWZONETYPE {
#pragma pack(1)
typedef struct tagSCmdRequest {
u8 name[16];
- void *data;
+ void __user *data;
u16 wResult;
u16 wCmdCode;
} SCmdRequest, *PSCmdRequest;
--
1.9.1
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