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s390/cio: make ccw_bus_type const

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Now that the driver core can properly handle constant struct bus_type,
move the ccw_bus_type variable to be a constant structure as well,
placing it into read-only memory which can not be modified at runtime.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20240203-bus_cleanup-s390-v1-3-ac891afc7282@marliere.net
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Ricardo B. Marliere 2024-02-03 11:58:00 -03:00 committed by Heiko Carstens
parent 42c4c8fdbd
commit fd2b4bfa5f
1 changed files with 2 additions and 2 deletions
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4
drivers/s390/cio/device.c
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@ -49,7 +49,7 @@ static const unsigned long recovery_delay[] = { 3, 30, 300 };
static atomic_t ccw_device_init_count = ATOMIC_INIT(0);
static DECLARE_WAIT_QUEUE_HEAD(ccw_device_init_wq);
static struct bus_type ccw_bus_type;
static const struct bus_type ccw_bus_type;
/******************* bus type handling ***********************/
@ -1776,7 +1776,7 @@ static void ccw_device_shutdown(struct device *dev)
__disable_cmf(cdev);
}
static struct bus_type ccw_bus_type = {
static const struct bus_type ccw_bus_type = {
.name = "ccw",
.match = ccw_bus_match,
.uevent = ccw_uevent,