drm/gpu: Remove dead checks on wbinvd_on_all_cpus()'s return value

Remove the checks and associated pr_err() on wbinvd_on_all_cpus() failure,
as the helper has unconditionally returned 0/success since commit

  caa759323c73 ("smp: Remove smp_call_function() and on_each_cpu() return values").

Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/20250522233733.3176144-2-seanjc@google.com

diff --git a/drivers/gpu/drm/drm_cache.c b/drivers/gpu/drm/drm_cache.c
index 7051c9c909c2808181cea9486cfdadcbb4a3cf02..ea1d2d5d2c66cff6b3963095ecfa61e41cc6c6f2 100644 (file)
--- a/drivers/gpu/drm/drm_cache.c
+++ b/drivers/gpu/drm/drm_cache.c
@@ -93,8 +93,7 @@ drm_clflush_pages(struct page *pages[], unsigned long num_pages)
                return;
        }
 
-       if (wbinvd_on_all_cpus())
-               pr_err("Timed out waiting for cache flush\n");
+       wbinvd_on_all_cpus();
 
 #elif defined(__powerpc__)
        unsigned long i;
@@ -139,8 +138,7 @@ drm_clflush_sg(struct sg_table *st)
                return;
        }
 
-       if (wbinvd_on_all_cpus())
-               pr_err("Timed out waiting for cache flush\n");
+       wbinvd_on_all_cpus();
 #else
        WARN_ONCE(1, "Architecture has no drm_cache.c support\n");
 #endif
@@ -172,8 +170,7 @@ drm_clflush_virt_range(void *addr, unsigned long length)
                return;
        }
 
-       if (wbinvd_on_all_cpus())
-               pr_err("Timed out waiting for cache flush\n");
+       wbinvd_on_all_cpus();
 #else
        WARN_ONCE(1, "Architecture has no drm_cache.c support\n");
 #endif