From f89d17ae2ac42931be2a0153fecbf8533280c927 Mon Sep 17 00:00:00 2001 From: Zhen Lei Date: Sat, 26 Oct 2024 11:56:34 +0800 Subject: fbdev: sh7760fb: Fix a possible memory leak in sh7760fb_alloc_mem() When information such as info->screen_base is not ready, calling sh7760fb_free_mem() does not release memory correctly. Call dma_free_coherent() instead. Fixes: 4a25e41831ee ("video: sh7760fb: SH7760/SH7763 LCDC framebuffer driver") Signed-off-by: Zhen Lei Reviewed-by: Dmitry Baryshkov Signed-off-by: Helge Deller --- drivers/video/fbdev/sh7760fb.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/video/fbdev/sh7760fb.c b/drivers/video/fbdev/sh7760fb.c index 3d2a27fefc87..130adef2e468 100644 --- a/drivers/video/fbdev/sh7760fb.c +++ b/drivers/video/fbdev/sh7760fb.c @@ -409,12 +409,11 @@ static int sh7760fb_alloc_mem(struct fb_info *info) vram = PAGE_SIZE; fbmem = dma_alloc_coherent(info->device, vram, &par->fbdma, GFP_KERNEL); - if (!fbmem) return -ENOMEM; if ((par->fbdma & SH7760FB_DMA_MASK) != SH7760FB_DMA_MASK) { - sh7760fb_free_mem(info); + dma_free_coherent(info->device, vram, fbmem, par->fbdma); dev_err(info->device, "kernel gave me memory at 0x%08lx, which is" "unusable for the LCDC\n", (unsigned long)par->fbdma); return -ENOMEM; -- cgit v1.2.3