[bug report] drm/msm: dsi: Handle dual-channel for 6G as well

[Dan Carpenter <dan.carpenter@oracle.com>]

Hello Sean Paul,

The patch a6bcddbc2ee1: "drm/msm: dsi: Handle dual-channel for 6G as
well" from Jul 25, 2018, leads to the following
Smatch static checker warning:

	drivers/gpu/drm/msm/dsi/dsi_host.c:729 dsi_calc_clk_rate_6g()
	warn: wrong type for 'msm_host->esc_clk_rate' (should be 'ulong')

drivers/gpu/drm/msm/dsi/dsi_host.c
    721 int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_bonded_dsi)
    722 {
    723         if (!msm_host->mode) {
    724                 pr_err("%s: mode not set\n", __func__);
    725                 return -EINVAL;
    726         }
    727 
    728         dsi_calc_pclk(msm_host, is_bonded_dsi);
--> 729         msm_host->esc_clk_rate = clk_get_rate(msm_host->esc_clk);
                ^^^^^^^^^^^^^^^^^^^^^^
I don't know why Smatch is suddenly warning about ancient msm code, but
clock rates should be unsigned long.  (I don't remember why).

    730         return 0;
    731 }

regards,
dan carpenter