Unverified Commit 6df534cc authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman Committed by Mark Brown
Browse files

spi: make spi_bus_type const 



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

Cc: Mark Brown <broonie@kernel.org>
Cc:  <linux-spi@vger.kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://msgid.link/r/2024010549-erasure-swoop-1cc6@gregkh


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 4247d7f2

drivers/spi/spi.c

+1 −1
Original line number Diff line number Diff line
@@ -459,7 +459,7 @@ static void spi_shutdown(struct device *dev) 
	}

}



struct bus_type spi_bus_type = {

const struct bus_type spi_bus_type = {

	.name		= "spi",

	.dev_groups	= spi_dev_groups,

	.match		= spi_match_device,

include/linux/spi/spi.h

+1 −1
Original line number Diff line number Diff line
@@ -36,7 +36,7 @@ struct spi_message; 
 * INTERFACES between SPI master-side drivers and SPI slave protocol handlers,

 * and SPI infrastructure.

 */

extern struct bus_type spi_bus_type;

extern const struct bus_type spi_bus_type;



/**

 * struct spi_statistics - statistics for spi transfers