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| author | Rob Herring (Arm) <robh@kernel.org> | 2026-08-31 14:43:51 -0500 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2026-09-13 18:17:31 -0700 |
| commit | 55fc280e951ab2b39f3dcb640edc1b1eebc6d173 (patch) | |
| tree | f0b5f37b42fc13b9908a31b657c646b024231cdd /arch/sh/lib/div64.S | |
| download | linux-stable-55fc280e951ab2b39f3dcb640edc1b1eebc6d173.tar.gz linux-stable-55fc280e951ab2b39f3dcb640edc1b1eebc6d173.zip | |
Input: tsc2007 - read "ti,poll-period" as u32grafted
The "ti,poll-period" property is documented as a normal uint32 cell.
The driver used a u64 helper, which makes the helper type disagree with
the schema even though the stored value is still small.
Read "ti,poll-period" with the u32 helper matching the documented DT
cell size.
Assisted-by: Codex:gpt-5-5
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20260831194352.1185860-1-robh@kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'arch/sh/lib/div64.S')
| -rw-r--r-- | arch/sh/lib/div64.S | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/sh/lib/div64.S b/arch/sh/lib/div64.S new file mode 100644 index 000000000..4a9a966e7 --- /dev/null +++ b/arch/sh/lib/div64.S @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * unsigned long __xdiv64_32(unsigned long long n, unsigned long d); + */ + +#include <linux/linkage.h> + +.text +ENTRY(__xdiv64_32) +#ifdef CONFIG_CPU_LITTLE_ENDIAN + mov r4, r0 + mov r5, r1 +#else + mov r4, r1 + mov r5, r0 +#endif + cmp/hs r6, r1 + bf.s 1f + mov #0, r2 + + mov r1, r2 + mov #0, r3 + div0u + .rept 32 + rotcl r2 + div1 r6, r3 + .endr + rotcl r2 + mul.l r6, r2 + sts macl, r3 + sub r3, r1 +1: + div0u + .rept 32 + rotcl r0 + div1 r6, r1 + .endr +#ifdef CONFIG_CPU_LITTLE_ENDIAN + mov r2, r1 + rts + rotcl r0 +#else + rotcl r0 + mov r0, r1 + rts + mov r2, r0 +#endif |