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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org Replace the hardcoded value 2, which indicates 2 bits for I3C address status, with the predefined macro I3C_ADDR_SLOT_BITS. Improve maintainability and extensibility of the code. Signed-off-by: Frank Li --- drivers/i3c/master.c | 4 ++-- include/linux/i3c/master.h | 4 +++- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index 852b32178b722..85c737554c940 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -348,7 +348,7 @@ static enum i3c_addr_slot_status i3c_bus_get_addr_slot_status(struct i3c_bus *bus, u16 addr) { unsigned long status; - int bitpos = addr * 2; + int bitpos = addr * I3C_ADDR_SLOT_BITS; if (addr > I2C_MAX_ADDR) return I3C_ADDR_SLOT_RSVD; @@ -362,7 +362,7 @@ i3c_bus_get_addr_slot_status(struct i3c_bus *bus, u16 addr) static void i3c_bus_set_addr_slot_status(struct i3c_bus *bus, u16 addr, enum i3c_addr_slot_status status) { - int bitpos = addr * 2; + int bitpos = addr * I3C_ADDR_SLOT_BITS; unsigned long *ptr; if (addr > I2C_MAX_ADDR) diff --git a/include/linux/i3c/master.h b/include/linux/i3c/master.h index 074f632868d98..4601b6957f799 100644 --- a/include/linux/i3c/master.h +++ b/include/linux/i3c/master.h @@ -299,6 +299,8 @@ enum i3c_addr_slot_status { I3C_ADDR_SLOT_STATUS_MASK = 3, }; +#define I3C_ADDR_SLOT_BITS 2 + /** * struct i3c_bus - I3C bus object * @cur_master: I3C master currently driving the bus. Since I3C is multi-master @@ -340,7 +342,7 @@ enum i3c_addr_slot_status { struct i3c_bus { struct i3c_dev_desc *cur_master; int id; - unsigned long addrslots[((I2C_MAX_ADDR + 1) * 2) / BITS_PER_LONG]; + unsigned long addrslots[((I2C_MAX_ADDR + 1) * I3C_ADDR_SLOT_BITS) / BITS_PER_LONG]; enum i3c_bus_mode mode; struct { unsigned long i3c; -- 2.34.1 -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c