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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/m68k/mvme147
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/m68k/mvme147')
-rw-r--r--arch/m68k/mvme147/Makefile6
-rw-r--r--arch/m68k/mvme147/config.c210
-rw-r--r--arch/m68k/mvme147/mvme147.h6
3 files changed, 222 insertions, 0 deletions
diff --git a/arch/m68k/mvme147/Makefile b/arch/m68k/mvme147/Makefile
new file mode 100644
index 000000000..d78f6f9fa
--- /dev/null
+++ b/arch/m68k/mvme147/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Makefile for Linux arch/m68k/mvme147 source directory
+#
+
+obj-y := config.o
diff --git a/arch/m68k/mvme147/config.c b/arch/m68k/mvme147/config.c
new file mode 100644
index 000000000..3054d3857
--- /dev/null
+++ b/arch/m68k/mvme147/config.c
@@ -0,0 +1,210 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * arch/m68k/mvme147/config.c
+ *
+ * Copyright (C) 1996 Dave Frascone [chaos@mindspring.com]
+ * Cloned from Richard Hirst [richard@sleepie.demon.co.uk]
+ *
+ * Based on:
+ *
+ * Copyright (C) 1993 Hamish Macdonald
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/clocksource.h>
+#include <linux/console.h>
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <linux/major.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/rtc/m48t59.h>
+
+#include <asm/bootinfo.h>
+#include <asm/bootinfo-vme.h>
+#include <asm/byteorder.h>
+#include <asm/setup.h>
+#include <asm/irq.h>
+#include <asm/traps.h>
+#include <asm/machdep.h>
+#include <asm/mvme147hw.h>
+#include <asm/config.h>
+
+#include "mvme147.h"
+
+static void mvme147_get_model(char *model);
+static void __init mvme147_sched_init(void);
+extern void mvme147_reset (void);
+
+
+int __init mvme147_parse_bootinfo(const struct bi_record *bi)
+{
+ uint16_t tag = be16_to_cpu(bi->tag);
+ if (tag == BI_VME_TYPE || tag == BI_VME_BRDINFO)
+ return 0;
+ else
+ return 1;
+}
+
+void mvme147_reset(void)
+{
+ pr_info("\r\n\nCalled mvme147_reset\r\n");
+ m147_pcc->watchdog = 0x0a; /* Clear timer */
+ m147_pcc->watchdog = 0xa5; /* Enable watchdog - 100ms to reset */
+ while (1)
+ ;
+}
+
+static void mvme147_get_model(char *model)
+{
+ sprintf(model, "Motorola MVME147");
+}
+
+/*
+ * This function is called during kernel startup to initialize
+ * the mvme147 IRQ handling routines.
+ */
+
+static void __init mvme147_init_IRQ(void)
+{
+ m68k_setup_user_interrupt(VEC_USER, 192);
+}
+
+void __init config_mvme147(void)
+{
+ mach_sched_init = mvme147_sched_init;
+ mach_init_IRQ = mvme147_init_IRQ;
+ mach_reset = mvme147_reset;
+ mach_get_model = mvme147_get_model;
+
+ /* Board type is only set by newer versions of vmelilo/tftplilo */
+ if (!vme_brdtype)
+ vme_brdtype = VME_TYPE_MVME147;
+}
+
+static struct resource m48t59_rsrc[] = {
+ DEFINE_RES_MEM(MVME147_RTC_BASE, 0x800),
+};
+
+static struct m48t59_plat_data m48t59_data = {
+ .type = M48T59RTC_TYPE_M48T02,
+ .yy_offset = 70,
+};
+
+static int __init mvme147_platform_init(void)
+{
+ if (!MACH_IS_MVME147)
+ return 0;
+
+ platform_device_register_resndata(NULL, "rtc-m48t59", -1,
+ m48t59_rsrc, ARRAY_SIZE(m48t59_rsrc),
+ &m48t59_data, sizeof(m48t59_data));
+ return 0;
+}
+
+arch_initcall(mvme147_platform_init);
+
+static u64 mvme147_read_clk(struct clocksource *cs);
+
+static struct clocksource mvme147_clk = {
+ .name = "pcc",
+ .rating = 250,
+ .read = mvme147_read_clk,
+ .mask = CLOCKSOURCE_MASK(32),
+ .flags = CLOCK_SOURCE_IS_CONTINUOUS,
+};
+
+static u32 clk_total;
+
+#define PCC_TIMER_CLOCK_FREQ 160000
+#define PCC_TIMER_CYCLES (PCC_TIMER_CLOCK_FREQ / HZ)
+#define PCC_TIMER_PRELOAD (0x10000 - PCC_TIMER_CYCLES)
+
+/* Using pcc tick timer 1 */
+
+static irqreturn_t mvme147_timer_int (int irq, void *dev_id)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ m147_pcc->t1_cntrl = PCC_TIMER_CLR_OVF | PCC_TIMER_COC_EN |
+ PCC_TIMER_TIC_EN;
+ m147_pcc->t1_int_cntrl = PCC_INT_ENAB | PCC_TIMER_INT_CLR |
+ PCC_LEVEL_TIMER1;
+ clk_total += PCC_TIMER_CYCLES;
+ legacy_timer_tick(1);
+ local_irq_restore(flags);
+
+ return IRQ_HANDLED;
+}
+
+
+static void __init mvme147_sched_init(void)
+{
+ if (request_irq(PCC_IRQ_TIMER1, mvme147_timer_int, IRQF_TIMER,
+ "timer 1", NULL))
+ pr_err("Couldn't register timer interrupt\n");
+
+ /* Init the clock with a value */
+ /* The clock counter increments until 0xFFFF then reloads */
+ m147_pcc->t1_preload = PCC_TIMER_PRELOAD;
+ m147_pcc->t1_cntrl = PCC_TIMER_CLR_OVF | PCC_TIMER_COC_EN |
+ PCC_TIMER_TIC_EN;
+ m147_pcc->t1_int_cntrl = PCC_INT_ENAB | PCC_TIMER_INT_CLR |
+ PCC_LEVEL_TIMER1;
+
+ clocksource_register_hz(&mvme147_clk, PCC_TIMER_CLOCK_FREQ);
+}
+
+static u64 mvme147_read_clk(struct clocksource *cs)
+{
+ unsigned long flags;
+ u8 overflow, tmp;
+ u16 count;
+ u32 ticks;
+
+ local_irq_save(flags);
+ tmp = m147_pcc->t1_cntrl >> 4;
+ count = m147_pcc->t1_count;
+ overflow = m147_pcc->t1_cntrl >> 4;
+ if (overflow != tmp)
+ count = m147_pcc->t1_count;
+ count -= PCC_TIMER_PRELOAD;
+ ticks = count + overflow * PCC_TIMER_CYCLES;
+ ticks += clk_total;
+ local_irq_restore(flags);
+
+ return ticks;
+}
+
+static void scc_delay(void)
+{
+ __asm__ __volatile__ ("nop; nop;");
+}
+
+static void scc_write(char ch)
+{
+ do {
+ scc_delay();
+ } while (!(in_8(M147_SCC_A_ADDR) & BIT(2)));
+ scc_delay();
+ out_8(M147_SCC_A_ADDR, 8);
+ scc_delay();
+ out_8(M147_SCC_A_ADDR, ch);
+}
+
+void mvme147_scc_write(struct console *co, const char *str, unsigned int count)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ while (count--) {
+ if (*str == '\n')
+ scc_write('\r');
+ scc_write(*str++);
+ }
+ local_irq_restore(flags);
+}
diff --git a/arch/m68k/mvme147/mvme147.h b/arch/m68k/mvme147/mvme147.h
new file mode 100644
index 000000000..140bc98b0
--- /dev/null
+++ b/arch/m68k/mvme147/mvme147.h
@@ -0,0 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+struct console;
+
+/* config.c */
+void mvme147_scc_write(struct console *co, const char *str, unsigned int count);