[PATCH] drm/xe/pf: Fix EAGAIN sign in pf_migration_consume()

[Shuicheng Lin <shuicheng.lin@intel.com>]

PTR_ERR() returns a negative value, so comparing against the positive
EAGAIN is always true for ERR_PTR(-EAGAIN), causing pf_migration_consume()
to bail out instead of continuing to the remaining GTs. On multi-GT
platforms this can skip GTs that already have data ready.

Compare against -EAGAIN to match the intent (and the following line
that correctly uses -EAGAIN).

Fixes: 67df4a5cbc58 ("drm/xe/pf: Add data structures and handlers for migration rings")
Assisted-by: Claude:claude-opus-4.6
Cc: Michał Winiarski <michal.winiarski@intel.com>
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>
---
 drivers/gpu/drm/xe/xe_sriov_pf_migration.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_sriov_pf_migration.c b/drivers/gpu/drm/xe/xe_sriov_pf_migration.c
index 6c4b16409cc9..d6f602f715f0 100644
--- a/drivers/gpu/drm/xe/xe_sriov_pf_migration.c
+++ b/drivers/gpu/drm/xe/xe_sriov_pf_migration.c
@@ -149,7 +149,7 @@ pf_migration_consume(struct xe_device *xe, unsigned int vfid)
 
 	for_each_gt(gt, xe, gt_id) {
 		data = xe_gt_sriov_pf_migration_save_consume(gt, vfid);
-		if (data && PTR_ERR(data) != EAGAIN)
+		if (data && PTR_ERR(data) != -EAGAIN)
 			return data;
 		if (PTR_ERR(data) == -EAGAIN)
 			more_data = true;
-- 
2.43.0