mirror of
https://github.com/torvalds/linux.git
synced 2026-04-18 06:44:00 -04:00
0a7ec808ab
Each SCMI firmware quirk contains a code snippet, which handles the
quirk, and has full access to the surrounding context. When this
context is (part of) a loop body, the code snippet may want to use loop
control statements like "break" and "continue". Unfortunately the
SCMI_QUIRK() macro implementation contains a dummy loop, taking
precedence over any outer loops. Hence quirk code cannot use loop
control statements, but has to resort to polluting the surrounding
context with a label, and use goto.
Fix this by replacing the "do { ... } while (0)" construct in the
SCMI_QUIRK() implementation by "({ ... })".
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Message-Id: <51de914cddef8fa86c2e7dd5397e5df759c45464.1773675224.git.geert+renesas@glider.be>
Signed-off-by: Sudeep Holla <sudeep.holla@kernel.org>
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* System Control and Management Interface (SCMI) Message Protocol Quirks
|
|
*
|
|
* Copyright (C) 2025 ARM Ltd.
|
|
*/
|
|
#ifndef _SCMI_QUIRKS_H
|
|
#define _SCMI_QUIRKS_H
|
|
|
|
#include <linux/static_key.h>
|
|
#include <linux/types.h>
|
|
|
|
#ifdef CONFIG_ARM_SCMI_QUIRKS
|
|
|
|
#define DECLARE_SCMI_QUIRK(_qn) \
|
|
DECLARE_STATIC_KEY_FALSE(scmi_quirk_ ## _qn)
|
|
|
|
/*
|
|
* A helper to associate the actual code snippet to use as a quirk
|
|
* named as _qn.
|
|
*/
|
|
#define SCMI_QUIRK(_qn, _blk) \
|
|
({ \
|
|
if (static_branch_unlikely(&(scmi_quirk_ ## _qn))) \
|
|
(_blk); \
|
|
})
|
|
|
|
void scmi_quirks_initialize(void);
|
|
void scmi_quirks_enable(struct device *dev, const char *vend,
|
|
const char *subv, const u32 impl);
|
|
|
|
#else
|
|
|
|
#define DECLARE_SCMI_QUIRK(_qn)
|
|
/* Force quirks compilation even when SCMI Quirks are disabled */
|
|
#define SCMI_QUIRK(_qn, _blk) \
|
|
({ \
|
|
if (0) \
|
|
(_blk); \
|
|
})
|
|
|
|
static inline void scmi_quirks_initialize(void) { }
|
|
static inline void scmi_quirks_enable(struct device *dev, const char *vend,
|
|
const char *sub_vend, const u32 impl) { }
|
|
|
|
#endif /* CONFIG_ARM_SCMI_QUIRKS */
|
|
|
|
/* Quirk delarations */
|
|
DECLARE_SCMI_QUIRK(clock_rates_triplet_out_of_spec);
|
|
DECLARE_SCMI_QUIRK(perf_level_get_fc_force);
|
|
|
|
#endif /* _SCMI_QUIRKS_H */
|