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authorKees Cook <kees+treewide@kernel.org>2026-09-02 15:31:14 -0700
committerKees Cook <kees@kernel.org>2026-09-04 21:37:00 -0700
commit3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch)
treec65086f9bdcd48c6360fb7cb4598bca084da1f32 /arch/x86/video/video-common.c
downloadlinux-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.c69
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");