Revision e9338abf0e186336022293d2e454c106761f262b authored by Linus Torvalds on 15 July 2021, 20:57:31 UTC, committed by Linus Torvalds on 15 July 2021, 20:57:31 UTC
Pull fallthrough fixes from Gustavo Silva: "This fixes many fall-through warnings when building with Clang and -Wimplicit-fallthrough, and also enables -Wimplicit-fallthrough for Clang, globally. It's also important to notice that since we have adopted the use of the pseudo-keyword macro fallthrough, we also want to avoid having more /* fall through */ comments being introduced. Contrary to GCC, Clang doesn't recognize any comments as implicit fall-through markings when the -Wimplicit-fallthrough option is enabled. So, in order to avoid having more comments being introduced, we use the option -Wimplicit-fallthrough=5 for GCC, which similar to Clang, will cause a warning in case a code comment is intended to be used as a fall-through marking. The patch for Makefile also enforces this. We had almost 4,000 of these issues for Clang in the beginning, and there might be a couple more out there when building some architectures with certain configurations. However, with the recent fixes I think we are in good shape and it is now possible to enable the warning for Clang" * tag 'Wimplicit-fallthrough-clang-5.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux: (27 commits) Makefile: Enable -Wimplicit-fallthrough for Clang powerpc/smp: Fix fall-through warning for Clang dmaengine: mpc512x: Fix fall-through warning for Clang usb: gadget: fsl_qe_udc: Fix fall-through warning for Clang powerpc/powernv: Fix fall-through warning for Clang MIPS: Fix unreachable code issue MIPS: Fix fall-through warnings for Clang ASoC: Mediatek: MT8183: Fix fall-through warning for Clang power: supply: Fix fall-through warnings for Clang dmaengine: ti: k3-udma: Fix fall-through warning for Clang s390: Fix fall-through warnings for Clang dmaengine: ipu: Fix fall-through warning for Clang iommu/arm-smmu-v3: Fix fall-through warning for Clang mmc: jz4740: Fix fall-through warning for Clang PCI: Fix fall-through warning for Clang scsi: libsas: Fix fall-through warning for Clang video: fbdev: Fix fall-through warning for Clang math-emu: Fix fall-through warning cpufreq: Fix fall-through warning for Clang drm/msm: Fix fall-through warning in msm_gem_new_impl() ...
i8042-ip22io.h
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _I8042_IP22_H
#define _I8042_IP22_H
#include <asm/sgi/ioc.h>
#include <asm/sgi/ip22.h>
/*
* Names.
*/
#define I8042_KBD_PHYS_DESC "hpc3ps2/serio0"
#define I8042_AUX_PHYS_DESC "hpc3ps2/serio1"
#define I8042_MUX_PHYS_DESC "hpc3ps2/serio%d"
/*
* IRQs.
*/
#define I8042_KBD_IRQ SGI_KEYBD_IRQ
#define I8042_AUX_IRQ SGI_KEYBD_IRQ
/*
* Register numbers.
*/
#define I8042_COMMAND_REG ((unsigned long)&sgioc->kbdmouse.command)
#define I8042_STATUS_REG ((unsigned long)&sgioc->kbdmouse.command)
#define I8042_DATA_REG ((unsigned long)&sgioc->kbdmouse.data)
static inline int i8042_read_data(void)
{
return sgioc->kbdmouse.data;
}
static inline int i8042_read_status(void)
{
return sgioc->kbdmouse.command;
}
static inline void i8042_write_data(int val)
{
sgioc->kbdmouse.data = val;
}
static inline void i8042_write_command(int val)
{
sgioc->kbdmouse.command = val;
}
static inline int i8042_platform_init(void)
{
#if 0
/* XXX sgi_kh is a virtual address */
if (!request_mem_region(sgi_kh, sizeof(struct hpc_keyb), "i8042"))
return -EBUSY;
#endif
i8042_reset = I8042_RESET_ALWAYS;
return 0;
}
static inline void i8042_platform_exit(void)
{
#if 0
release_mem_region(JAZZ_KEYBOARD_ADDRESS, sizeof(struct hpc_keyb));
#endif
}
#endif /* _I8042_IP22_H */
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