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11 Commits

Author SHA1 Message Date
Dan Carpenter
97a64ba77d misc/pvpanic: fix a NULL vs IS_ERR() check 
The devm_ioremap_resource() function doesn't return NULL, it returns
error pointers.

Fixes: 46f934c9a1 ("misc/pvpanic: add support to get pvpanic device info FDT")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-11-27 08:26:01 +01:00
Peng Hao
78ef4193bb misc/pvpanic: remove a redundant comma 
Remove a redundant comma in pvpanic_device_ids.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-11-07 13:53:04 +01:00
Peng Hao
7247932c7d misc/pvpanic: convert to SPDX license tags 
Updates license to use SPDX-License-Identifier instead of
verbose license text.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-11-07 13:53:04 +01:00
Peng Hao
8eeffed038 misc/pvpanic: change header file sort style 
Make header files alphabetical order.

Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-11-07 13:53:04 +01:00
Peng Hao
bfebd5c222 misc/pvpanic: remove unnecessary header file 
Remove unnecessary header file init.h.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-11-07 13:53:04 +01:00
Peng Hao
77703e0b03 misc/pvpanic : break dependency on ACPI 
The pvpanic driver is available for architectures that do not
support ACPI.So break the dependency.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-11-07 13:53:04 +01:00
Peng Hao
a8b71d2735 misc/pvpanic : grouping ACPI related stuff 
Grouping ACPI related stuff and make preparation to break
the ACPI dependency w/o any functional change.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-11-07 13:53:04 +01:00
Peng Hao
46f934c9a1 misc/pvpanic: add support to get pvpanic device info FDT 
By default, when ACPI tables and FDT coexist for ARM64,
current kernel takes precedence over FDT to get device information.
Virt machine in qemu provides both FDT and ACPI table. Increases the
way to get information through FDT.

Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-11-07 13:53:04 +01:00
Peng Hao
725eba2928 misc/pvpanic: add MMIO support 
On some architectures (e.g. arm64), it's preferable to use MMIO, since
this can be used standalone. Add MMIO support to the pvpanic driver.

Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
[Use acpi_dev_resource_memory API. - Andy]
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-11-07 13:53:04 +01:00
Peng Hao
d2ae1717f3 misc/pvpanic: simplify the code using acpi_dev_resource_io 
Use acpi_dev_resource_io API.

Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-11-07 13:53:04 +01:00
Peng Hao
fcb418cd56 pvpanic: move pvpanic to misc as common driver 
Move pvpanic.c from drivers/platform/x86 to drivers/misc.
Following patches will use pvpanic device in arm64.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2018-11-07 13:53:03 +01:00