Re: [PATCH 1/5] driver core: make struct class.dev_uevent() take a const *

From: Bart Van Assche
Date: Fri Nov 25 2022 - 18:51:23 EST


On 11/23/22 04:25, Greg Kroah-Hartman wrote:
diff --git a/include/linux/mISDNif.h b/include/linux/mISDNif.h
index 7dd1f01ec4f9..7aab4a769736 100644
--- a/include/linux/mISDNif.h
+++ b/include/linux/mISDNif.h
@@ -586,7 +586,7 @@ extern struct mISDNclock *mISDN_register_clock(char *, int, clockctl_func_t *,
void *);
extern void mISDN_unregister_clock(struct mISDNclock *);
-static inline struct mISDNdevice *dev_to_mISDN(struct device *dev)
+static inline struct mISDNdevice *dev_to_mISDN(const struct device *dev)
{
if (dev)
return dev_get_drvdata(dev);

Why does the dev_to_mISDN() function drop constness? I haven't found an explanation for this in the cover letter.

Thanks,

Bart.