[PATCH v2] staging: sm750fb: Remove redundant NULL and zero assignments in probe

DORMANTno replies

From: Temitope obabi <hidden>
Date: 2026-10-19 20:21:25
Also in: linux-staging, lkml
Subsystem: staging - silicon motion sm750 frame buffer driver, staging subsystem, the rest · Maintainers: Sudip Mukherjee, Teddy Wang, Sudip Mukherjee, Greg Kroah-Hartman, Linus Torvalds

The sm750_dev structure is allocated with devm_kzalloc() just above,
so its memory is already zeroed. Remove the explicit NULL assignments
to fbinfo[0] and fbinfo[1] and the zero assignment to mtrr.vram, which
only set fields that are already zero.

Signed-off-by: Temitope obabi <redacted>

---
Changes in v2:
- Remove an accidental duplicate of the note at the end of the patch.
  No code changes.

Note: Greg replied to my earlier sm750fb patch that keeping the
explicit zero assignments is good because it is clear what is
happening. In that patch the allocation was in a different function.
Here the assignments are in lynxfb_pci_probe(), just after the
devm_kzalloc() call and its NULL check, so I think removing them may
still be useful.


 drivers/staging/sm750fb/sm750.c | 3 ---
 1 file changed, 3 deletions(-)
diff --git a/drivers/staging/sm750fb/sm750.c b/drivers/staging/sm750fb/sm750.c
index 8b93bfeb217b..8702f6313f78 100644
--- a/drivers/staging/sm750fb/sm750.c
+++ b/drivers/staging/sm750fb/sm750.c
@@ -969,13 +969,10 @@ static int lynxfb_pci_probe(struct pci_dev *pdev,
 	if (!sm750_dev)
 		return err;
 
-	sm750_dev->fbinfo[0] = NULL;
-	sm750_dev->fbinfo[1] = NULL;
 	sm750_dev->devid = pdev->device;
 	sm750_dev->revid = pdev->revision;
 	sm750_dev->pdev = pdev;
 	sm750_dev->mtrr_off = g_nomtrr;
-	sm750_dev->mtrr.vram = 0;
 	sm750_dev->accel_off = g_noaccel;
 	spin_lock_init(&sm750_dev->slock);
 
-- 
2.53.0
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