On Tue, Sep 25, 2018 at 07:05:00AM +0200, Christophe LEROY wrote: > > > Le 24/09/2018 à 21:04, Corentin Labbe a écrit : > > This patch adds setbits32/clrbits32/clrsetbits32 and > > setbits64/clrbits64/clrsetbits64 in linux/setbits.h header. > > Fix the patch subject and description. > > > > > Signed-off-by: Corentin Labbe <clabbe@xxxxxxxxxxxx> > > --- > > include/linux/setbits.h | 88 +++++++++++++++++++++++++++++++++++++++++++++++++ > > 1 file changed, 88 insertions(+) > > create mode 100644 include/linux/setbits.h > > > > diff --git a/include/linux/setbits.h b/include/linux/setbits.h > > new file mode 100644 > > index 000000000000..6e7e257134ae > > --- /dev/null > > +++ b/include/linux/setbits.h > > @@ -0,0 +1,88 @@ > > +/* SPDX-License-Identifier: GPL-2.0 */ > > +#ifndef __LINUX_SETBITS_H > > +#define __LINUX_SETBITS_H > > + > > +#include <linux/io.h> > > + > > +#define __setbits(readfunction, writefunction, addr, set) \ > > + writefunction((readfunction(addr) | (set)), addr) > > You don't need so long names for parameters in a 2 lines macro (See > Linux Kernel Codying style §4 Naming). > > A single line macro would be feasible with only 3 chars names: > > #define __setbits(rfn, wfn, addr, set) wfn((rfn(addr) | (set)), addr) > Thanks I will fix all reported problem. > > +#define __clrbits(readfunction, writefunction, addr, mask) \ > > + writefunction((readfunction(addr) & ~(mask)), addr) > > +#define __clrsetbits(readfunction, writefunction, addr, mask, set) \ > > + writefunction(((readfunction(addr) & ~(mask)) | (set)), addr) > > +#define __setclrbits(readfunction, writefunction, addr, mask, set) \ > > + writefunction(((readfunction(addr) | (set)) & ~(mask)), addr) > > + > > +#ifndef setbits_le32 > > +#define setbits_le32(addr, set) __setbits(readl, writel, addr, set) > > +#endif > > +#ifndef setbits_le32_relaxed > > +#define setbits_le32_relaxed(addr, set) __setbits(readl_relaxed, writel_relaxed, \ > > + addr, set) > > +#endif > > + > > +#ifndef clrbits_le32 > > +#define clrbits_le32(addr, mask) __clrbits(readl, writel, addr, mask) > > +#endif > > +#ifndef clrbits_le32_relaxed > > +#define clrbits_le32_relaxed(addr, mask) __clrbits(readl_relaxed, writel_relaxed, \ > > + addr, mask) > > +#endif > > + > > +#ifndef clrsetbits_le32 > > +#define clrsetbits_le32(addr, mask, set) __clrsetbits(readl, writel, addr, mask, set) > > +#endif > > +#ifndef clrsetbits_le32_relaxed > > +#define clrsetbits_le32_relaxed(addr, mask, set) __clrsetbits(readl_relaxed, \ > > + writel_relaxed, \ > > + addr, mask, set) > > +#endif > > + > > +#ifndef setclrbits_le32 > > +#define setclrbits_le32(addr, mask, set) __setclrbits(readl, writel, addr, mask, set) > > +#endif > > +#ifndef setclrbits_le32_relaxed > > +#define setclrbits_le32_relaxed(addr, mask, set) __setclrbits(readl_relaxed, \ > > + writel_relaxed, \ > > + addr, mask, set) > > +#endif > > + > > +/* We cannot use CONFIG_64BIT as some x86 drivers use non-atomicwriteq() */ > > +#if defined(writeq) && defined(readq) > > Take care. At least Alpha Arch defines it as a static inline without > redefining it as a #define. (see arch/alpha/kernel/io.c) In fact, it does in arch/alpha/include/asm/io.h along with a gentle comment. But fixing their comment will be another interesting patch serie. Regards Corentin Labbe
