linux.git/drivers/misc, branch v5.3-rc6

misc: xilinx-sdfec: fix dependency and build error

2019-08-15T16:10:25+00:00

lib/devres.c, which implements devm_ioremap_resource(), is only built
when CONFIG_HAS_IOMEM is set/enabled, so XILINX_SDFEC should depend
on HAS_IOMEM.  Fixes this build error (as seen on UML builds):

ERROR: "devm_ioremap_resource" [drivers/misc/xilinx_sdfec.ko] undefined!

Fixes: 76d83e1c3233 ("misc: xilinx-sdfec: add core driver")
Signed-off-by: Randy Dunlap 
Cc: Derek Kiernan 
Cc: Dragan Cvetic 
Cc: Greg Kroah-Hartman 
Cc: Geert Uytterhoeven 
Cc: Arnd Bergmann 
Link: https://lore.kernel.org/r/f9004be5-9925-327b-3ec2-6506e46fe565@infradead.org
Signed-off-by: Greg Kroah-Hartman

habanalabs: fix device IRQ unmasking for BE host

2019-08-12T06:01:10+00:00

When unmasking IRQs inside the ASIC, the driver passes an array of all the
IRQ to unmask. The ASIC's CPU is working in LE so when running in a BE
host, the driver needs to do the proper endianness swapping when preparing
this array.

In addition, this patch also fixes the endianness of a couple of kernel log
debug messages that print values of packets

Signed-off-by: Ben Segal 
Reviewed-by: Oded Gabbay 
Signed-off-by: Oded Gabbay

habanalabs: fix endianness handling for internal QMAN submission

2019-08-12T06:01:10+00:00

The PQs of internal H/W queues (QMANs) can be located in different memory
areas for different ASICs. Therefore, when writing PQEs, we need to use
the correct function according to the location of the PQ. e.g. if the PQ
is located in the device's memory (SRAM or DRAM), we need to use
memcpy_toio() so it would work in architectures that have separate
address ranges for IO memory.

This patch makes the code that writes the PQE to be ASIC-specific so we
can handle this properly per ASIC.

Signed-off-by: Oded Gabbay 
Tested-by: Ben Segal

habanalabs: fix completion queue handling when host is BE

2019-08-12T06:01:10+00:00

This patch fix the CQ irq handler to work in hosts with BE architecture.
It adds the correct endian-swapping macros around the relevant memory
accesses.

Signed-off-by: Ben Segal 
Reviewed-by: Oded Gabbay 
Signed-off-by: Oded Gabbay

habanalabs: fix endianness handling for packets from user

2019-08-12T06:01:10+00:00

Packets that arrive from the user and need to be parsed by the driver are
assumed to be in LE format.

This patch fix all the places where the code handles these packets and use
the correct endianness macros to handle them, as the driver handles the
packets in CPU format (LE or BE depending on the arch).

Signed-off-by: Ben Segal 
Reviewed-by: Oded Gabbay 
Signed-off-by: Oded Gabbay

habanalabs: fix DRAM usage accounting on context tear down

2019-08-12T06:01:10+00:00

The patch fix the DRAM usage accounting by adding a missing update of
the DRAM memory consumption, when a context is being torn down without an
organized release of the allocated memory.

Signed-off-by: Tomer Tayar 
Reviewed-by: Oded Gabbay 
Signed-off-by: Oded Gabbay

habanalabs: Avoid double free in error flow

2019-08-12T06:00:34+00:00

In case kernel context init fails during device initialization, both
hl_ctx_put() and kfree() are called, ending with a double free of the
kernel context.
Calling kfree() is needed only when a failure happens between the
allocation of the kernel context and its initialization, so move it to
there and remove it from the error flow.

Signed-off-by: Tomer Tayar 
Reviewed-by: Oded Gabbay 
Signed-off-by: Oded Gabbay

Merge tag 'char-misc-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2019-08-10T19:24:20+00:00

Pull char/misc driver fixes Greg KH:
 "Here are some small char/misc driver fixes for 5.3-rc4.

  Two of these are for the habanalabs driver for issues found when
  running on a big-endian system (are they still alive?) The others are
  tiny fixes reported by people, and a MAINTAINERS update about the
  location of the fpga development tree.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  coresight: Fix DEBUG_LOCKS_WARN_ON for uninitialized attribute
  MAINTAINERS: Move linux-fpga tree to new location
  nvmem: Use the same permissions for eeprom as for nvmem
  habanalabs: fix host memory polling in BE architecture
  habanalabs: fix F/W download in BE architecture

Merge tag 'at24-v5.3-rc3-fixes-for-wolfram' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-current

2019-08-01T12:05:17+00:00

at24 fixes for v5.3-rc3

- make spd eeproms world-readable again

habanalabs: fix host memory polling in BE architecture

2019-07-29T08:40:25+00:00

This patch fix a bug in the host memory polling macro. The bug is that the
memory being polled can be written by the device, which always writes it
in LE. However, if the host is running Linux in BE mode, we need to
convert the value that was written by the device before matching it to the
required value that the caller has given to the macro.

Signed-off-by: Ben Segal 
Reviewed-by: Oded Gabbay 
Signed-off-by: Oded Gabbay