[PATCH 2/2] drm/xe: Avoid crypt message when there's no GuC definition

[Lucas De Marchi <lucas.demarchi@intel.com>]

If there's no GuC firmware entry in the table and the user didn't pass
an override path, the error message is very crypt: xe will simply try to
continue and then fail when submitting the default context:

	xe 0000:00:02.0: [drm:xe_pci_probe [xe]] XE_LUNARLAKE  64b0:0001 dgfx:0 gfx:Xe2_LPG (20.04) media:Xe2_LPM (20.00) display:no dma_m_s:46 tc:1 gscfi:0
	...
	xe: probe of 0000:00:02.0 failed with error -22

Add an explicit error message and bail out:

	xe 0000:00:02.0: [drm:xe_pci_probe [xe]] XE_LUNARLAKE  64b0:0001 dgfx:0 gfx:Xe2_LPG (20.04) media:Xe2_LPM (20.00) display:no dma_m_s:46 tc:1 gscfi:0
	xe 0000:00:02.0: [drm] *ERROR* No GuC firmware defined for platform
	xe 0000:00:02.0: [drm] *ERROR* GuC init failed with -2
	...
	xe: probe of 0000:00:02.0 failed with error -2

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
---
 drivers/gpu/drm/xe/xe_uc_fw.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_uc_fw.c b/drivers/gpu/drm/xe/xe_uc_fw.c
index c7541f1a5c0b..742170bc1a9d 100644
--- a/drivers/gpu/drm/xe/xe_uc_fw.c
+++ b/drivers/gpu/drm/xe/xe_uc_fw.c
@@ -665,8 +665,13 @@ static int uc_fw_request(struct xe_uc_fw *uc_fw, const struct firmware **firmwar
 			       XE_UC_FIRMWARE_SELECTED :
 			       XE_UC_FIRMWARE_NOT_SUPPORTED);
 
-	if (!xe_uc_fw_is_supported(uc_fw))
+	if (!xe_uc_fw_is_supported(uc_fw)) {
+		if (uc_fw->type == XE_UC_FW_TYPE_GUC) {
+			drm_err(&xe->drm, "No GuC firmware defined for platform\n");
+			return -ENOENT;
+		}
 		return 0;
+	}
 
 	/* an empty path means the firmware is disabled */
 	if (!xe_device_uc_enabled(xe) || !(*uc_fw->path)) {
-- 
2.43.0