[PATCH] SPI cleanup() method param becomes non-const
I'd like to assign NULL to kfree()d members of a structure. I can't do
that without ugly casting (see the PXA patch) when the structure pointed to
is const-qualified. I don't really see a reason why the cleanup method
isn't allowed to alter the object it should clean up. :-)
No, I didn't test the PXA patch, but I verified that the NULL-assignment
doesn't stop me from doing rmmod/insmodding my own spi_bitbang-based
driver.
Signed-off-by: Hans-Peter Nilsson <hp@axis.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 851b25d..9d8d631 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -220,7 +220,7 @@
struct spi_message *mesg);
/* called on release() to free memory provided by spi_master */
- void (*cleanup)(const struct spi_device *spi);
+ void (*cleanup)(struct spi_device *spi);
};
static inline void *spi_master_get_devdata(struct spi_master *master)
diff --git a/include/linux/spi/spi_bitbang.h b/include/linux/spi/spi_bitbang.h
index 16ce178..2e8c048 100644
--- a/include/linux/spi/spi_bitbang.h
+++ b/include/linux/spi/spi_bitbang.h
@@ -55,7 +55,7 @@
* methods, if you like.
*/
extern int spi_bitbang_setup(struct spi_device *spi);
-extern void spi_bitbang_cleanup(const struct spi_device *spi);
+extern void spi_bitbang_cleanup(struct spi_device *spi);
extern int spi_bitbang_transfer(struct spi_device *spi, struct spi_message *m);
extern int spi_bitbang_setup_transfer(struct spi_device *spi,
struct spi_transfer *t);