drm/xe/xe_survivability: Remove unused index

Remove unused index variable and fix for loop.

Fixes: f4e9fc967afd ("drm/xe/xe_survivability: Redesign survivability mode")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Closes: https://lore.kernel.org/intel-xe/20251210075757.GA1206705@ax162/
Signed-off-by: Riana Tauro <riana.tauro@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/20251218105151.586575-5-riana.tauro@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

diff --git a/drivers/gpu/drm/xe/xe_survivability_mode.c b/drivers/gpu/drm/xe/xe_survivability_mode.c
index 7520d7b7f9b8f9ae93c641e38d01be0a02451b19..2869866537adb4d82642862c530cb0850c43643a 100644 (file)
--- a/drivers/gpu/drm/xe/xe_survivability_mode.c
+++ b/drivers/gpu/drm/xe/xe_survivability_mode.c
@@ -128,11 +128,6 @@ xe_survivability_attribute *dev_attr_to_survivability_attr(struct device_attribu
        return container_of(attr, struct xe_survivability_attribute, attr);
 }
 
-static u32 aux_history_offset(u32 reg_value)
-{
-       return REG_FIELD_GET(AUXINFO_HISTORY_OFFSET, reg_value);
-}
-
 static void set_survivability_info(struct xe_mmio *mmio, u32  *info, int id)
 {
        info[id] = xe_mmio_read32(mmio, PCODE_SCRATCH(id));
@@ -144,7 +139,6 @@ static void populate_survivability_info(struct xe_device *xe)
        u32 *info = survivability->info;
        struct xe_mmio *mmio;
        u32 id = 0, reg_value;
-       int index;
 
        mmio = xe_root_tile_mmio(xe);
        set_survivability_info(mmio, info, CAPABILITY_INFO);
@@ -162,13 +156,12 @@ static void populate_survivability_info(struct xe_device *xe)
                        set_survivability_info(mmio, info, POSTCODE_TRACE_OVERFLOW);
        }
 
+       /* Traverse the linked list of aux info registers */
        if (reg_value & AUXINFO_SUPPORT) {
-               id = REG_FIELD_GET(AUXINFO_REG_OFFSET, reg_value);
-
-               for (index = 0; id >= AUX_INFO0 && id < MAX_SCRATCH_REG; index++) {
+               for (id = REG_FIELD_GET(AUXINFO_REG_OFFSET, reg_value);
+                    id >= AUX_INFO0 && id < MAX_SCRATCH_REG;
+                    id =  REG_FIELD_GET(AUXINFO_HISTORY_OFFSET, info[id]))
                        set_survivability_info(mmio, info, id);
-                       id = aux_history_offset(info[id]);
-               }
        }
 }