linux.git/arch/sh/drivers, branch v5.10

dma-mapping: move dma-debug.h to kernel/dma/

2020-10-06T05:07:05+00:00

Most of dma-debug.h is not required by anything outside of kernel/dma.
Move the four declarations needed by dma-mappin.h or dma-ops providers
into dma-mapping.h and dma-map-ops.h, and move the remainder of the
file to kernel/dma/debug.h.

Signed-off-by: Christoph Hellwig

dma-mapping: split

2020-10-06T05:07:03+00:00

Split out all the bits that are purely for dma_map_ops implementations
and related code into a new  header so that they
don't get pulled into all the drivers.  That also means the architecture
specific  is not pulled in by 
any more, which leads to a missing includes that were pulled in by the
x86 or arm versions in a few not overly portable drivers.

Signed-off-by: Christoph Hellwig

dma-mapping: introduce DMA range map, supplanting dma_pfn_offset

2020-09-17T16:43:56+00:00

The new field 'dma_range_map' in struct device is used to facilitate the
use of single or multiple offsets between mapping regions of cpu addrs and
dma addrs.  It subsumes the role of "dev->dma_pfn_offset" which was only
capable of holding a single uniform offset and had no region bounds
checking.

The function of_dma_get_range() has been modified so that it takes a single
argument -- the device node -- and returns a map, NULL, or an error code.
The map is an array that holds the information regarding the DMA regions.
Each range entry contains the address offset, the cpu_start address, the
dma_start address, and the size of the region.

of_dma_configure() is the typical manner to set range offsets but there are
a number of ad hoc assignments to "dev->dma_pfn_offset" in the kernel
driver code.  These cases now invoke the function
dma_direct_set_offset(dev, cpu_addr, dma_addr, size).

Signed-off-by: Jim Quinlan 
[hch: various interface cleanups]
Signed-off-by: Christoph Hellwig 
Reviewed-by: Mathieu Poirier 
Tested-by: Mathieu Poirier 
Tested-by: Nathan Chancellor

treewide: Use fallthrough pseudo-keyword

2020-08-23T22:36:59+00:00

Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva

sh: pci: Modernize printing of kernel messages

2020-08-15T02:05:10+00:00

  - Convert from printk() to pr_*(),
  - Add missing continuations,
  - Join broken messages.

Note that printk(KERN_DEBUG ...) is retained, to preserve behavior
(pr_debug() is a dummy if DEBUG is not defined).

Signed-off-by: Geert Uytterhoeven 
Tested-by: Guenter Roeck 
Signed-off-by: Rich Felker

sh: Remove SH5-based Cayman platform

2020-08-15T02:05:06+00:00

Since the removal of core support for SH5, Cayman support can no longer
be selected.

Fixes: 37744feebc086908 ("sh: remove sh5 support")
Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Rich Felker

sh: remove sh5 support

2020-06-01T18:48:52+00:00

sh5 never became a product and has probably never really worked.

Remove it by recursively deleting all associated Kconfig options
and all corresponding files.

Reviewed-by: Geert Uytterhoeven 
Signed-off-by: Arnd Bergmann 
Signed-off-by: Rich Felker

sh: Replace setup_irq() by request_irq()

2020-03-29T19:03:43+00:00

request_irq() is preferred over setup_irq(). Invocations of setup_irq()
occur after memory allocators are ready.

setup_irq() was required in older kernels as the memory allocator was not
available during early boot.

Hence replace setup_irq() by request_irq().

Signed-off-by: afzal mohammed 
Signed-off-by: Thomas Gleixner 
Link: https://lkml.kernel.org/r/b060312689820559121ee0a6456bbc1202fb7ee5.1585320721.git.afzal.mohd.ma@gmail.com

remove ioremap_nocache and devm_ioremap_nocache

2020-01-06T08:45:59+00:00

ioremap has provided non-cached semantics by default since the Linux 2.6
days, so remove the additional ioremap_nocache interface.

Signed-off-by: Christoph Hellwig 
Acked-by: Arnd Bergmann

drivers: Fix boot problem on SuperH

2019-12-10T14:51:20+00:00

SuperH images crash too eearly to display any console output. Bisect
points to commit 507fd01d5333 ("drivers: move the early platform device
support to arch/sh"). An analysis of that patch suggests that
early_platform_cleanup() is now called at the wrong time. Restoring its
call point fixes the problem.

Cc: Bartosz Golaszewski 
Fixes: 507fd01d5333 ("drivers: move the early platform device support to arch/sh")
Tested-by: Geert Uytterhoeven 
Signed-off-by: Guenter Roeck 
Acked-by: Rob Landley 
Link: https://lore.kernel.org/r/20191203205852.15659-1-linux@roeck-us.net
Signed-off-by: Greg Kroah-Hartman