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author | Álvaro Fernández Rojas <noltari@gmail.com> | 2016-07-07 09:22:07 +0200 |
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committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2016-07-09 16:29:18 +0200 |
commit | 20402106a376dcc4a766d3b0cee801ce29ba76d5 (patch) | |
tree | cfd93c19a6766663c4e8537ca8b8b82ad50478ee /target/linux/brcm2708/patches-4.4/0293-drm-vc4-Return-EFAULT-on-copy_from_user-failure.patch | |
parent | f1765277bacbea47a45ed913ca8fa043e9f71393 (diff) | |
download | mtk-20170518-20402106a376dcc4a766d3b0cee801ce29ba76d5.zip mtk-20170518-20402106a376dcc4a766d3b0cee801ce29ba76d5.tar.gz mtk-20170518-20402106a376dcc4a766d3b0cee801ce29ba76d5.tar.bz2 |
brcm2708: update linux 4.4 patches to latest version
As usual these patches were extracted and rebased from the raspberry pi repo:
https://github.com/raspberrypi/linux/tree/rpi-4.4.y
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0293-drm-vc4-Return-EFAULT-on-copy_from_user-failure.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.4/0293-drm-vc4-Return-EFAULT-on-copy_from_user-failure.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0293-drm-vc4-Return-EFAULT-on-copy_from_user-failure.patch b/target/linux/brcm2708/patches-4.4/0293-drm-vc4-Return-EFAULT-on-copy_from_user-failure.patch new file mode 100644 index 0000000..082dec5 --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0293-drm-vc4-Return-EFAULT-on-copy_from_user-failure.patch @@ -0,0 +1,36 @@ +From deb04405c9c7362840387414fcf33f01d056c697 Mon Sep 17 00:00:00 2001 +From: Dan Carpenter <dan.carpenter@oracle.com> +Date: Tue, 8 Mar 2016 15:09:41 +0300 +Subject: [PATCH 293/423] drm/vc4: Return -EFAULT on copy_from_user() failure + +The copy_from_user() function returns the number of bytes not copied but +we want to return a negative error code. + +Fixes: 463873d57014 ('drm/vc4: Add an API for creating GPU shaders in GEM BOs.') +Cc: stable@vger.kernel.org +Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> +Reviewed-by: Eric Anholt <eric@anholt.net> +Signed-off-by: Eric Anholt <eric@anholt.net> +(cherry picked from commit 585cb132a48190b554aecda2ebc3e2911fcbb665) +--- + drivers/gpu/drm/vc4/vc4_bo.c | 7 ++++--- + 1 file changed, 4 insertions(+), 3 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_bo.c ++++ b/drivers/gpu/drm/vc4/vc4_bo.c +@@ -519,11 +519,12 @@ vc4_create_shader_bo_ioctl(struct drm_de + if (IS_ERR(bo)) + return PTR_ERR(bo); + +- ret = copy_from_user(bo->base.vaddr, ++ if (copy_from_user(bo->base.vaddr, + (void __user *)(uintptr_t)args->data, +- args->size); +- if (ret != 0) ++ args->size)) { ++ ret = -EFAULT; + goto fail; ++ } + /* Clear the rest of the memory from allocating from the BO + * cache. + */ |