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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/mips/sni/reset.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/mips/sni/reset.c')
-rw-r--r--arch/mips/sni/reset.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/mips/sni/reset.c b/arch/mips/sni/reset.c
new file mode 100644
index 000000000..66f963d8d
--- /dev/null
+++ b/arch/mips/sni/reset.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * linux/arch/mips/sni/process.c
+ *
+ * Reset a SNI machine.
+ */
+#include <linux/delay.h>
+
+#include <asm/io.h>
+#include <asm/reboot.h>
+#include <asm/sni.h>
+
+/*
+ * This routine reboots the machine by asking the keyboard
+ * controller to pulse the reset-line low. We try that for a while,
+ * and if it doesn't work, we do some other stupid things.
+ */
+static inline void kb_wait(void)
+{
+ int i;
+
+ for (i = 0; i < 0x10000; i++)
+ if ((inb_p(0x64) & 0x02) == 0)
+ break;
+}
+
+/* XXX This ends up at the ARC firmware prompt ... */
+void sni_machine_restart(char *command)
+{
+ int i;
+
+ /* This does a normal via the keyboard controller like a PC.
+ We can do that easier ... */
+ local_irq_disable();
+ for (;;) {
+ for (i = 0; i < 100; i++) {
+ kb_wait();
+ udelay(50);
+ outb_p(0xfe, 0x64); /* pulse reset low */
+ udelay(50);
+ }
+ }
+}
+
+void sni_machine_power_off(void)
+{
+ *(volatile unsigned char *)PCIMT_CSWCSM = 0xfd;
+}