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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k

Browse Source 
Pull m68k updates from Geert Uytterhoeven:
 "Summary:
  - a fix for an intermittent crash in macsonic and hilkbd, marked for
    stable,
  - build fixes for uncommon configs.

  Note: "m68k: AMIGA_BUILTIN_SERIAL should depend on TTY" was also
  picked up by GregKH for his TTY/Serial patches tree"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Reformat arch/m68k/mm/hwtest.c
  m68k: Disable/restore interrupts in hwreg_present()/hwreg_write()
  m68k: AMIGA_BUILTIN_SERIAL should depend on TTY
  m68k: Add missing ioport_unmap()
  m68k/atari - stram: Add missing #include <linux/ioport.h>
This commit is contained in:
Linus Torvalds 2014-10-08 05:40:17 -04:00
commit 0223f9aaef
4 changed files with 53 additions and 37 deletions
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2
arch/m68k/Kconfig.devices
View File

@ -95,7 +95,7 @@ config ATARI_DSP56K
config AMIGA_BUILTIN_SERIAL
tristate "Amiga builtin serial support"
depends on AMIGA
depends on AMIGA && TTY
help
If you want to use your Amiga's built-in serial port in Linux,
answer Y.

1
arch/m68k/atari/stram.c
View File

@ -21,6 +21,7 @@
#include <linux/mount.h>
#include <linux/blkdev.h>
#include <linux/module.h>
#include <linux/ioport.h>
#include <asm/setup.h>
#include <asm/machdep.h>

9
arch/m68k/include/asm/io_mm.h
View File

@ -510,6 +510,13 @@ static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int
*/
#define xlate_dev_kmem_ptr(p) p
#define ioport_map(port, nr) ((void __iomem *)(port))
static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
{
return (void __iomem *) port;
}
static inline void ioport_unmap(void __iomem *p)
{
}
#endif /* _IO_H */

78
arch/m68k/mm/hwtest.c
View File

@ -25,29 +25,32 @@
#include <linux/module.h>
int hwreg_present( volatile void *regp )
int hwreg_present(volatile void *regp)
{
int ret = 0;
long save_sp, save_vbr;
long tmp_vectors[3];
int ret = 0;
unsigned long flags;
long save_sp, save_vbr;
long tmp_vectors[3];
__asm__ __volatile__
( "movec %/vbr,%2\n\t"
"movel #Lberr1,%4@(8)\n\t"
"movec %4,%/vbr\n\t"
"movel %/sp,%1\n\t"
"moveq #0,%0\n\t"
"tstb %3@\n\t"
local_irq_save(flags);
__asm__ __volatile__ (
"movec %/vbr,%2\n\t"
"movel #Lberr1,%4@(8)\n\t"
"movec %4,%/vbr\n\t"
"movel %/sp,%1\n\t"
"moveq #0,%0\n\t"
"tstb %3@\n\t"
"nop\n\t"
"moveq #1,%0\n"
"Lberr1:\n\t"
"movel %1,%/sp\n\t"
"movec %2,%/vbr"
"moveq #1,%0\n"
"Lberr1:\n\t"
"movel %1,%/sp\n\t"
"movec %2,%/vbr"
: "=&d" (ret), "=&r" (save_sp), "=&r" (save_vbr)
: "a" (regp), "a" (tmp_vectors)
);
);
local_irq_restore(flags);
return( ret );
return ret;
}
EXPORT_SYMBOL(hwreg_present);
@ -55,31 +58,36 @@ EXPORT_SYMBOL(hwreg_present);
* by a bus error handler. Returns 1 if successful, 0 otherwise.
*/
int hwreg_write( volatile void *regp, unsigned short val )
int hwreg_write(volatile void *regp, unsigned short val)
{
int ret;
long save_sp, save_vbr;
long tmp_vectors[3];
int ret;
unsigned long flags;
long save_sp, save_vbr;
long tmp_vectors[3];
__asm__ __volatile__
( "movec %/vbr,%2\n\t"
"movel #Lberr2,%4@(8)\n\t"
"movec %4,%/vbr\n\t"
"movel %/sp,%1\n\t"
"moveq #0,%0\n\t"
"movew %5,%3@\n\t"
"nop \n\t" /* If this nop isn't present, 'ret' may already be
* loaded with 1 at the time the bus error
* happens! */
"moveq #1,%0\n"
local_irq_save(flags);
__asm__ __volatile__ (
"movec %/vbr,%2\n\t"
"movel #Lberr2,%4@(8)\n\t"
"movec %4,%/vbr\n\t"
"movel %/sp,%1\n\t"
"moveq #0,%0\n\t"
"movew %5,%3@\n\t"
"nop\n\t"
/*
* If this nop isn't present, 'ret' may already be loaded
* with 1 at the time the bus error happens!
*/
"moveq #1,%0\n"
"Lberr2:\n\t"
"movel %1,%/sp\n\t"
"movec %2,%/vbr"
"movel %1,%/sp\n\t"
"movec %2,%/vbr"
: "=&d" (ret), "=&r" (save_sp), "=&r" (save_vbr)
: "a" (regp), "a" (tmp_vectors), "g" (val)
);
local_irq_restore(flags);
return( ret );
return ret;
}
EXPORT_SYMBOL(hwreg_write);