[PATCH 1/4] phy: qcom: qmp-combo: delay Type-C mux switch while DP PHY is initializing

[Manivannan Sadhasivam]

On Mon, Aug 24, 2026 at 04:58:04PM +0530, Saurabh Anand wrote:
> The Type-C mux switch guard only checked dp_powered_on, which is set in
> qmp_combo_dp_power_on(). However there is a race window between
> qmp_combo_dp_init() and qmp_combo_dp_power_on() during which dp_init_count
> is non-zero but dp_powered_on is still false. A Type-C orientation change
> arriving in this window would proceed with the mux switch while the DP PHY
> is mid-initialization, corrupting the PHY state.
> 
> Extend the guard to also block the mux switch when dp_init_count is
> non-zero, covering the full period from dp_init through dp_power_on.
> 
> Signed-off-by: Saurabh Anand <saurabh.anand at oss.qualcomm.com>

If this patch fixes a race condition, it should have a Fixes tag.

- Mani