• Tony Lindgren's avatar
    pinctrl: core: Fix pinctrl_register_and_init() with pinctrl_enable() · 61187142
    Tony Lindgren authored
    Recent pinctrl changes to allow dynamic allocation of pins exposed one
    more issue with the pinctrl pins claimed early by the controller itself.
    This caused a regression for IMX6 pinctrl hogs.
    Before enabling the pin controller driver we need to wait until it has
    been properly initialized, then claim the hogs, and only then enable it.
    To fix the regression, split the code into pinctrl_claim_hogs() and
    pinctrl_enable(). And then let's require that pinctrl_enable() is always
    called by the pin controller driver when ready after calling
    Depends-on: 950b0d91 ("pinctrl: core: Fix regression caused by delayed
    work for hogs")
    Fixes: df61b366af26 ("pinctrl: core: Use delayed work for hogs")
    Fixes: e566fc11 ("pinctrl: imx: use generic pinctrl helpers for
    managing groups")
    Cc: Haojian Zhuang <haojian.zhuang@linaro.org>
    Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
    Cc: Mika Penttilä <mika.penttila@nextfour.com>
    Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
    Cc: Nishanth Menon <nm@ti.com>
    Cc: Shawn Guo <shawnguo@kernel.org>
    Cc: Stefan Agner <stefan@agner.ch>
    Tested-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
    Tested-by: default avatarGary Bisson <gary.bisson@boundarydevices.com>
    Tested-by: default avatarFabio Estevam <fabio.estevam@nxp.com>
    Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
    Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
pinctrl.txt 50.4 KB