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| author | Kees Cook <kees+treewide@kernel.org> | 2026-09-02 15:31:14 -0700 |
|---|---|---|
| committer | Kees Cook <kees@kernel.org> | 2026-09-04 21:37:00 -0700 |
| commit | 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch) | |
| tree | c65086f9bdcd48c6360fb7cb4598bca084da1f32 /arch/x86/video/video-common.c | |
| download | linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip | |
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules in
scripts/coccinelle/api/kmalloc_objs.cocci
This catches both the set of kmalloc() uses added since the first
kmalloc_obj() conversions in v7.0 and adds a large group missed in the
first pass due to Coccinelle not interacting well with the cleanup.h
scoped_...() family of macros[1]. I worked around this with spatch's
"--macro-file" argument to a file with all the scoped_...() macros mapped
to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control
flow indicator I could find.
Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc,
riscv, and s390 with no new warnings.
Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1]
Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2]
Signed-off-by: Kees Cook <kees+treewide@kernel.org>
Diffstat (limited to 'arch/x86/video/video-common.c')
| -rw-r--r-- | arch/x86/video/video-common.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/arch/x86/video/video-common.c b/arch/x86/video/video-common.c new file mode 100644 index 000000000..8ed82fff7 --- /dev/null +++ b/arch/x86/video/video-common.c @@ -0,0 +1,69 @@ +/* + * Copyright (C) 2007 Antonino Daplas <adaplas@gmail.com> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + */ + +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/sysfb.h> +#include <linux/vgaarb.h> + +#include <asm/video.h> + +pgprot_t pgprot_framebuffer(pgprot_t prot, + unsigned long vm_start, unsigned long vm_end, + unsigned long offset) +{ + pgprot_val(prot) &= ~_PAGE_CACHE_MASK; + if (boot_cpu_data.x86 > 3) + pgprot_val(prot) |= cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS); + + return prot; +} +EXPORT_SYMBOL(pgprot_framebuffer); + +bool video_is_primary_device(struct device *dev) +{ +#ifdef CONFIG_SCREEN_INFO + struct screen_info *si = &sysfb_primary_display.screen; + struct resource res[SCREEN_INFO_MAX_RESOURCES]; + ssize_t i, numres; +#endif + struct pci_dev *pdev; + + if (!dev_is_pci(dev)) + return false; + + pdev = to_pci_dev(dev); + + if (!pci_is_display(pdev)) + return false; + +#ifdef CONFIG_SCREEN_INFO + numres = screen_info_resources(si, res, ARRAY_SIZE(res)); + if (numres > 0) { + for (i = 0; i < numres; ++i) { + if (!(res[i].flags & IORESOURCE_MEM)) + continue; + + if (pci_find_resource(pdev, &res[i])) + return true; + } + + return false; + } +#endif + + /* + * No framebuffer was set up by the firmware/bootloader, so fall back + * to the default VGA device. + */ + return pdev == vga_default_device(); +} +EXPORT_SYMBOL(video_is_primary_device); + +MODULE_LICENSE("GPL"); |
