From: Paolo 'Blaisorblade' Giarrusso <[EMAIL PROTECTED]>
When enabling the mmapper driver I got warnings because this "const" miscdevice
structure is passed to function as non-const pointer; unlike struct
tty_operations, however, I verified that misc_{de,}register _do_ modify their
parameter, so this const attribute must be removed.
Since the purpose of the change was to guarantee that no lock was needed, add a
comment to prove this differently.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <[EMAIL PROTECTED]>
---
arch/um/drivers/mmapper_kern.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/um/drivers/mmapper_kern.c b/arch/um/drivers/mmapper_kern.c
index 9a3b5da..df3516e 100644
--- a/arch/um/drivers/mmapper_kern.c
+++ b/arch/um/drivers/mmapper_kern.c
@@ -95,7 +95,8 @@ static const struct file_operations mmap
.release = mmapper_release,
};
-static const struct miscdevice mmapper_dev = {
+/* No locking needed - only used (and modified) by below initcall and
exitcall. */
+static struct miscdevice mmapper_dev = {
.minor = MISC_DYNAMIC_MINOR,
.name = "mmapper",
.fops = &mmapper_fops
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