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    Subject[PATCH 4.19 197/206] drm/i915/icl+: Fix hotplug interrupt disabling after storm detection
    Date
    From: Imre Deak <imre.deak@intel.com>

    commit a3005c2edf7e8c3478880db1ca84028a2b6819bb upstream.

    Atm, hotplug interrupts on TypeC ports are left enabled after detecting
    an interrupt storm, fix this.

    Reported-by: Kunal Joshi <kunal1.joshi@intel.com>
    Bugzilla: https://gitlab.freedesktop.org/drm/intel/-/issues/1964
    Cc: Kunal Joshi <kunal1.joshi@intel.com>
    Cc: stable@vger.kernel.org
    Signed-off-by: Imre Deak <imre.deak@intel.com>
    Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
    Link: https://patchwork.freedesktop.org/patch/msgid/20200612121731.19596-1-imre.deak@intel.com
    (cherry picked from commit 587a87b9d7e94927edcdea018565bc1939381eb1)
    Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/gpu/drm/i915/i915_irq.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/drivers/gpu/drm/i915/i915_irq.c
    +++ b/drivers/gpu/drm/i915/i915_irq.c
    @@ -3821,6 +3821,7 @@ static void gen11_hpd_irq_setup(struct d

    val = I915_READ(GEN11_DE_HPD_IMR);
    val &= ~hotplug_irqs;
    + val |= ~enabled_irqs & hotplug_irqs;
    I915_WRITE(GEN11_DE_HPD_IMR, val);
    POSTING_READ(GEN11_DE_HPD_IMR);


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