serial: sh-sci: Use devm_clk_get_optional()

The sh-sci driver supports up to four input clocks, of which only the
first one is mandatory.

Replace devm_clk_get() and custom error checking by
devm_clk_get_optional(), to simplify the code and to catch all real
errors.

Reviewed-by: Wolfram Sang <[email protected]>
Reviewed-by: Laurent Pinchart <[email protected]>
Signed-off-by: Geert Uytterhoeven <[email protected]>
Link: https://lore.kernel.org/r/bce27288cb570952dd96b441e1af8768ad8b4870.1639663832.git.geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <[email protected]>

0 files changed, 0 insertions, 0 deletions