mfd: Fix aat2870 build failure for x86_64
Without this fix, we get:
error: call to ‘copy_from_user_overflow’ declared with attribute error:
copy_from_user() buffer size is not provably correct
make[3]: *** [drivers/mfd/aat2870-core.o] Error 1
And this was triggered by commit da417bacc9143b934f1a480a25d0fb2bb648a820
Signed-off-by: Jin Park <[email protected]>
Signed-off-by: Samuel Ortiz <[email protected]>
diff --git a/drivers/mfd/aat2870-core.c b/drivers/mfd/aat2870-core.c
index 345dc65..02c4201 100644
--- a/drivers/mfd/aat2870-core.c
+++ b/drivers/mfd/aat2870-core.c
@@ -295,7 +295,7 @@
{
struct aat2870_data *aat2870 = file->private_data;
char buf[32];
- int buf_size;
+ ssize_t buf_size;
char *start = buf;
unsigned long addr, val;
int ret;
