1 files changed, 11 insertions, 2 deletions

diff --git a/drivers/hwtracing/intel_th/core.c b/drivers/hwtracing/intel_th/core.c
index 4e70ecee2103..fc6b7f8b62fb 100644
--- a/drivers/hwtracing/intel_th/core.c
+++ b/drivers/hwtracing/intel_th/core.c
@@ -488,7 +488,7 @@ static const struct intel_th_subdevice {
                                 .flags  = IORESOURCE_MEM,
                         },
                         {
-                                .start  = TH_MMIO_SW,
+                                .start  = 1, /* use resource[1] */
                                 .end    = 0,
                                 .flags  = IORESOURCE_MEM,
                         },
@@ -581,6 +581,7 @@ intel_th_subdevice_alloc(struct intel_th *th,
         struct intel_th_device *thdev;
         struct resource res[3];
         unsigned int req = 0;
+        bool is64bit = false;
         int r, err;
 
         thdev = intel_th_device_alloc(th, subdev->type, subdev->name,
@@ -590,12 +591,18 @@ intel_th_subdevice_alloc(struct intel_th *th,
 
         thdev->drvdata = th->drvdata;
 
+        for (r = 0; r < th->num_resources; r++)
+                if (th->resource[r].flags & IORESOURCE_MEM_64) {
+                        is64bit = true;
+                        break;
+                }
+
         memcpy(res, subdev->res,
                sizeof(struct resource) * subdev->nres);
 
         for (r = 0; r < subdev->nres; r++) {
                 struct resource *devres = th->resource;
-                int bar = TH_MMIO_CONFIG;
+                int bar = 0; /* cut subdevices' MMIO from resource[0] */
 
                 /*
                  * Take .end == 0 to mean 'take the whole bar',
@@ -604,6 +611,8 @@ intel_th_subdevice_alloc(struct intel_th *th,
                  */
                 if (!res[r].end && res[r].flags == IORESOURCE_MEM) {
                         bar = res[r].start;
+                        if (is64bit)
+                                bar *= 2;
                         res[r].start = 0;
                         res[r].end = resource_size(&devres[bar]) - 1;
                 }