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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/mips/pci/ops-mace.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/mips/pci/ops-mace.c')
| -rw-r--r-- | arch/mips/pci/ops-mace.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/arch/mips/pci/ops-mace.c b/arch/mips/pci/ops-mace.c new file mode 100644 index 000000000..951d8070f --- /dev/null +++ b/arch/mips/pci/ops-mace.c @@ -0,0 +1,100 @@ +/* + * 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. + * + * Copyright (C) 2000, 2001 Keith M Wesolowski + */ +#include <linux/kernel.h> +#include <linux/pci.h> +#include <linux/types.h> +#include <asm/ip32/mace.h> + +#if 0 +# define DPRINTK(args...) printk(args); +#else +# define DPRINTK(args...) +#endif + +/* + * O2 has up to 5 PCI devices connected into the MACE bridge. The device + * map looks like this: + * + * 0 aic7xxx 0 + * 1 aic7xxx 1 + * 2 expansion slot + * 3 N/C + * 4 N/C + */ + +static inline int mkaddr(struct pci_bus *bus, unsigned int devfn, + unsigned int reg) +{ + return ((bus->number & 0xff) << 16) | + ((devfn & 0xff) << 8) | + (reg & 0xfc); +} + + +static int +mace_pci_read_config(struct pci_bus *bus, unsigned int devfn, + int reg, int size, u32 *val) +{ + u32 control = mace->pci.control; + + /* disable master aborts interrupts during config read */ + mace->pci.control = control & ~MACEPCI_CONTROL_MAR_INT; + mace->pci.config_addr = mkaddr(bus, devfn, reg); + switch (size) { + case 1: + *val = mace->pci.config_data.b[(reg & 3) ^ 3]; + break; + case 2: + *val = mace->pci.config_data.w[((reg >> 1) & 1) ^ 1]; + break; + case 4: + *val = mace->pci.config_data.l; + break; + } + /* ack possible master abort */ + mace->pci.error &= ~MACEPCI_ERROR_MASTER_ABORT; + mace->pci.control = control; + /* + * someone forgot to set the ultra bit for the onboard + * scsi chips; we fake it here + */ + if (bus->number == 0 && reg == 0x40 && size == 4 && + (devfn == (1 << 3) || devfn == (2 << 3))) + *val |= 0x1000; + + DPRINTK("read%d: reg=%08x,val=%02x\n", size * 8, reg, *val); + + return PCIBIOS_SUCCESSFUL; +} + +static int +mace_pci_write_config(struct pci_bus *bus, unsigned int devfn, + int reg, int size, u32 val) +{ + mace->pci.config_addr = mkaddr(bus, devfn, reg); + switch (size) { + case 1: + mace->pci.config_data.b[(reg & 3) ^ 3] = val; + break; + case 2: + mace->pci.config_data.w[((reg >> 1) & 1) ^ 1] = val; + break; + case 4: + mace->pci.config_data.l = val; + break; + } + + DPRINTK("write%d: reg=%08x,val=%02x\n", size * 8, reg, val); + + return PCIBIOS_SUCCESSFUL; +} + +struct pci_ops mace_pci_ops = { + .read = mace_pci_read_config, + .write = mace_pci_write_config, +}; |
