From: Thomas Zimmermann tzimmermann@suse.de

stable inclusion from stable-v4.19.325 commit 3b69263adaaaa5513db98c5b3fe9053a21ff2a6d category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IBEGG7 CVE: CVE-2024-56746

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...

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[ Upstream commit 8404e56f4bc1d1a65bfc98450ba3dae5e653dda1 ]

Pass the hardware device to the DMA helpers dma_alloc_coherent() and dma_free_coherent(). The fbdev device that is currently being used is a software device and does not provide DMA memory. Also update the related dev_*() output statements similarly.

Signed-off-by: Thomas Zimmermann tzimmermann@suse.de Reviewed-by: Javier Martinez Canillas javierm@redhat.com Link: https://patchwork.freedesktop.org/patch/msgid/20230613110953.24176-28-tzimme... Stable-dep-of: f89d17ae2ac4 ("fbdev: sh7760fb: Fix a possible memory leak in sh7760fb_alloc_mem()") Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Liu Shixin liushixin2@huawei.com --- drivers/video/fbdev/sh7760fb.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/video/fbdev/sh7760fb.c b/drivers/video/fbdev/sh7760fb.c index 96de91d76623..c8ba3aeb3277 100644 --- a/drivers/video/fbdev/sh7760fb.c +++ b/drivers/video/fbdev/sh7760fb.c @@ -362,7 +362,7 @@ static void sh7760fb_free_mem(struct fb_info *info) if (!info->screen_base) return;

- dma_free_coherent(info->dev, info->screen_size, + dma_free_coherent(info->device, info->screen_size, info->screen_base, par->fbdma);

par->fbdma = 0; @@ -411,14 +411,14 @@ static int sh7760fb_alloc_mem(struct fb_info *info) if (vram < PAGE_SIZE) vram = PAGE_SIZE;

- fbmem = dma_alloc_coherent(info->dev, vram, &par->fbdma, GFP_KERNEL); + 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); - dev_err(info->dev, "kernel gave me memory at 0x%08lx, which is" + dev_err(info->device, "kernel gave me memory at 0x%08lx, which is" "unusable for the LCDC\n", (unsigned long)par->fbdma); return -ENOMEM; } @@ -489,7 +489,7 @@ static int sh7760fb_probe(struct platform_device *pdev)

ret = sh7760fb_alloc_mem(info); if (ret) { - dev_dbg(info->dev, "framebuffer memory allocation failed!\n"); + dev_dbg(info->device, "framebuffer memory allocation failed!\n"); goto out_unmap; }