On 12/2/24 9:11 AM, Matteo Martelli wrote: > During channel configuration, the iio-mux driver allocates a page with > devm_kzalloc(PAGE_SIZE) to read channel ext_info. However, the resulting > buffer points to an offset of the page due to the devres header sitting > at the beginning of the allocated area. This leads to failure in the > provider driver when sysfs_emit* helpers are used to format the ext_info > attributes. > > Switch to plain kzalloc version. The devres version is not strictly > necessary as the buffer is only accessed during the channel > configuration phase. Rely on __free cleanup to deallocate the buffer. > Also, move the ext_info handling into a new function to have the page > buffer definition and assignment in one statement as suggested by > cleanup documentation. > > Signed-off-by: Matteo Martelli <matteomartelli3@xxxxxxxxx> > --- Reviewed-by: David Lechner <dlechner@xxxxxxxxxxxx>
