mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-01 06:33:07 +00:00
c605610142
The SoundWire specification allows the device number to be allocated at will. When a system includes multiple SoundWire links, the device number scope is limited to the link to which the device is attached. However, for integration/debug it can be convenient to have a unique device number across the system. This patch adds a 'dev_num_ida_min' field at the bus level, which when set will be used to allocate an IDA. The allocation happens when a hardware device reports as ATTACHED. If any error happens during the enumeration, the allocated IDA is not freed - the device number will be reused if/when the device re-joins the bus. The IDA is only freed when the Linux device is unregistered. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20220823045004.2670658-3-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org> |
||
---|---|---|
.. | ||
acpi | ||
asm-generic | ||
clocksource | ||
crypto | ||
drm | ||
dt-bindings | ||
keys | ||
kunit | ||
kvm | ||
linux | ||
math-emu | ||
media | ||
memory | ||
misc | ||
net | ||
pcmcia | ||
ras | ||
rdma | ||
rv | ||
scsi | ||
soc | ||
sound | ||
target | ||
trace | ||
uapi | ||
ufs | ||
vdso | ||
video | ||
xen |