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Commit 62d3a8de authored by Rodrigo Vivi's avatar Rodrigo Vivi
Browse files

drm/i915: Free write_buf that we allocated with kzalloc. 



We use kzalloc to allocate the write_buf that we use for
i2c transfer on hdcp write. But it seems that we are forgetting
to free the memory that is not needed after i2c transfer is
completed.

Reported-by: default avatarBrian J Wood <brian.j.wood@intel.com>
Fixes: 2320175f ("drm/i915: Implement HDCP for HDMI")
Cc: Ramalingam C <ramalingam.c@intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: <stable@vger.kernel.org> # v4.17+
Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180823205136.31310-1-rodrigo.vivi@intel.com
parent a61d904f

drivers/gpu/drm/i915/intel_hdmi.c

+6 −2
Original line number Diff line number Diff line
@@ -943,8 +943,12 @@ static int intel_hdmi_hdcp_write(struct intel_digital_port *intel_dig_port, 


	ret = i2c_transfer(adapter, &msg, 1);

	if (ret == 1)

		return 0;

	return ret >= 0 ? -EIO : ret;

		ret = 0;

	else if (ret >= 0)

		ret = -EIO;



	kfree(write_buf);

	return ret;

}



static