• Shawn Guo's avatar
    ARM: imx: fix .is_enabled() of shared gate clock · 9e1ac462
    Shawn Guo authored
    Commit 63288b72 ("ARM: imx: fix shared gate clock") attempted to fix
    an issue with particular enable/disable sequence from two shared gate
    clocks.  But unfortunately, while it partially fixed the issue, it also
    did something wrong in .is_enabled() function hook.  In case of shared
    gate, the function shouldn't really query the hardware state via
    share_count, because the function is trying to query the enabling state
    of the clock in question, not the hardware state which is shared by
    multiple clocks.
    
    Fix the issue by returning the enable_count of the clock itself which is
    maintained by clock core, in case it's a clock sharing hardware gate
    with others.  As the result, the initialization of share_count per
    hardware state is not needed now.  So remove it.
    Reported-by: default avatarFabio Estevam <fabio.estevam@freescale.com>
    Fixes: 63288b72 ("ARM: imx: fix shared gate clock")
    Cc: <stable@vger.kernel.org>
    Signed-off-by: default avatarShawn Guo <shawn.guo@freescale.com>
    Tested-by: default avatarFabio Estevam <fabio.estevam@freescale.com>
    Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
    9e1ac462
clk-gate2.c 3.21 KB