On Thu, Feb 27, 2025 at 10:24:55PM +0000, Titus Rwantare wrote: > The `pmbus_identify()` function fails to correctly determine the number > of supported pages on PMBus devices. This occurs because `info->pages` > is implicitly zero-initialised, and `pmbus_set_page()` does not perform > writes to the page register if `info->pages` is not yet initialised. > Without this patch, `info->pages` is always set to the maximum after > scanning. > > This patch initialises `info->pages` to `PMBUS_PAGES` before the probing > loop, enabling `pmbus_set_page()` writes to make it out onto the bus > correctly identifying the number of pages. `PMBUS_PAGES` seemed like a > reasonable non-zero number because that's the current result of the > identification process. > > Testing was done with a PMBus device in QEMU. > > Signed-off-by: Titus Rwantare <titusr@xxxxxxxxxx> Applied. Thanks, Guenter
