lkml.org 
[lkml]   [2024]   [Apr]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] of: reserved_mem: Remove the use of phandle from the reserved_mem APIs

On Mon, 22 Apr 2024 16:52:43 -0700, Oreoluwa Babatunde wrote:
> The __find_rmem() function is the only place that references the phandle
> field of the reserved_mem struct. __find_rmem() is used to match a
> device_node object to its corresponding entry in the reserved_mem array
> using its phandle value. But, there is already a function called
> of_reserved_mem_lookup() which carries out the same action using the
> name of the node.
>
> Using the of_reserved_mem_lookup() function is more reliable because
> every node is gauranteed to have a name, but not all nodes will have a
> phandle.
>
> Nodes are only assigned a phandle if they are explicitly defined in the
> DT using "phandle = <phandle_number>", or if they are referenced by
> another node in the DT. Hence, If the phandle field is empty, then
> __find_rmem() will return a false negative.
>
> Hence, delete the __find_rmem() function and switch to using the
> of_reserved_mem_lookup() function to find the corresponding entry of a
> device_node in the reserved_mem array. Since the phandle field of the
> reserved_mem struct is now unused, delete that as well.
>
> Signed-off-by: Oreoluwa Babatunde <quic_obabatun@quicinc.com>
> ---
> drivers/of/of_reserved_mem.c | 26 +++-----------------------
> include/linux/of_reserved_mem.h | 1 -
> 2 files changed, 3 insertions(+), 24 deletions(-)
>

Applied, thanks!


\
 
 \ /
  Last update: 2024-05-27 18:08    [W:0.063 / U:0.388 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site