On Wed, Mar 21, 2018 at 10:37:36AM -0600, Logan Gunthorpe wrote: > The semantics of the iowriteXXbe() functions are to write a > value in CPU endianess to an IO register that is known by the > caller to be in Big Endian. The mmio_writeXXbe() macro, which > is called by iowriteXXbe(), should therefore use cpu_to_beXX() > instead of beXX_to_cpu(). > > Seeing both beXX_to_cpu() and cpu_to_beXX() are both functionally > implemented as either null operations or swabXX operations there > was no noticable bug here. But it is confusing for both developers > and code analysis tools alike. > > Signed-off-by: Logan Gunthorpe <logang@xxxxxxxxxxxx> > Cc: Philippe Ombredanne <pombredanne@xxxxxxxx> > Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> > Cc: Kate Stewart <kstewart@xxxxxxxxxxxxxxxxxxx> > Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > Cc: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx> > --- > lib/iomap.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/lib/iomap.c b/lib/iomap.c > index 541d926da95e..be120c13d6cc 100644 > --- a/lib/iomap.c > +++ b/lib/iomap.c > @@ -106,8 +106,8 @@ EXPORT_SYMBOL(ioread32be); > #endif > > #ifndef mmio_write16be > -#define mmio_write16be(val,port) __raw_writew(be16_to_cpu(val),port) > -#define mmio_write32be(val,port) __raw_writel(be32_to_cpu(val),port) > +#define mmio_write16be(val,port) __raw_writew(cpu_to_be16(val),port) > +#define mmio_write32be(val,port) __raw_writel(cpu_to_be32(val),port) > #endif > > void iowrite8(u8 val, void __iomem *addr) > -- > 2.11.0 > LGTM, feel free to add my Reviewed-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx> -- Luc
