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| author | Billy Tsai <billy_tsai@aspeedtech.com> | 2022-09-26 18:51:44 +0800 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2022-10-12 23:45:29 +0200 |
| commit | d4fa7d772adc02451076b3ad1f990d8b822909fc (patch) | |
| tree | f7f3d96f6272dcc09afbf816cf6ce1cb709fce9d /drivers/i3c/master.c | |
| parent | 568035b01cfb107af8d2e4bd2fb9aea22cf5b868 (diff) | |
| download | lwn-d4fa7d772adc02451076b3ad1f990d8b822909fc.tar.gz lwn-d4fa7d772adc02451076b3ad1f990d8b822909fc.zip | |
i3c: master: Free the old_dyn_addr when reattach.
This patch is used to free the old_dyn_addr when the caller want to
reattach the device to the different dynamic address. If the
old_dyn_addr is 0 the function will treat it as no old_dyn_addr is
reserved on the bus. Without the patch, when the driver reattach the i3c
device after setnewda the old_dyn_addr will be permanently occupied.
Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
Link: https://lore.kernel.org/r/20220926105145.8145-1-billy_tsai@aspeedtech.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/i3c/master.c')
| -rw-r--r-- | drivers/i3c/master.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index 7850287dfe7a..6349ce0ce835 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -1379,6 +1379,9 @@ static int i3c_master_reattach_i3c_dev(struct i3c_dev_desc *dev, i3c_bus_set_addr_slot_status(&master->bus, dev->info.dyn_addr, I3C_ADDR_SLOT_I3C_DEV); + if (old_dyn_addr) + i3c_bus_set_addr_slot_status(&master->bus, old_dyn_addr, + I3C_ADDR_SLOT_FREE); } if (master->ops->reattach_i3c_dev) { |