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  1. Mar 27, 2019
    • Christoph Muellner's avatar
      arm64: dts: rockchip: Disable DCMDs on RK3399's eMMC controller. · a3eec13b
      Christoph Muellner authored 
      

When using direct commands (DCMDs) on an RK3399, we get spurious
CQE completion interrupts for the DCMD transaction slot (#31):

[  931.196520] ------------[ cut here ]------------
[  931.201702] mmc1: cqhci: spurious TCN for tag 31
[  931.206906] WARNING: CPU: 0 PID: 1433 at /usr/src/kernel/drivers/mmc/host/cqhci.c:725 cqhci_irq+0x2e4/0x490
[  931.206909] Modules linked in:
[  931.206918] CPU: 0 PID: 1433 Comm: irq/29-mmc1 Not tainted 4.19.8-rt6-funkadelic #1
[  931.206920] Hardware name: Theobroma Systems RK3399-Q7 SoM (DT)
[  931.206924] pstate: 40000005 (nZcv daif -PAN -UAO)
[  931.206927] pc : cqhci_irq+0x2e4/0x490
[  931.206931] lr : cqhci_irq+0x2e4/0x490
[  931.206933] sp : ffff00000e54bc80
[  931.206934] x29: ffff00000e54bc80 x28: 0000000000000000
[  931.206939] x27: 0000000000000001 x26: ffff000008f217e8
[  931.206944] x25: ffff8000f02ef030 x24: ffff0000091417b0
[  931.206948] x23: ffff0000090aa000 x22: ffff8000f008b000
[  931.206953] x21: 0000000000000002 x20: 000000000000001f
[  931.206957] x19: ffff8000f02ef018 x18: ffffffffffffffff
[  931.206961] x17: 0000000000000000 x16: 0000000000000000
[  931.206966] x15: ffff0000090aa6c8 x14: 0720072007200720
[  931.206970] x13: 0720072007200720 x12: 0720072007200720
[  931.206975] x11: 0720072007200720 x10: 0720072007200720
[  931.206980] x9 : 0720072007200720 x8 : 0720072007200720
[  931.206984] x7 : 0720073107330720 x6 : 00000000000005a0
[  931.206988] x5 : ffff00000860d4b0 x4 : 0000000000000000
[  931.206993] x3 : 0000000000000001 x2 : 0000000000000001
[  931.206997] x1 : 1bde3a91b0d4d900 x0 : 0000000000000000
[  931.207001] Call trace:
[  931.207005]  cqhci_irq+0x2e4/0x490
[  931.207009]  sdhci_arasan_cqhci_irq+0x5c/0x90
[  931.207013]  sdhci_irq+0x98/0x930
[  931.207019]  irq_forced_thread_fn+0x2c/0xa0
[  931.207023]  irq_thread+0x114/0x1c0
[  931.207027]  kthread+0x128/0x130
[  931.207032]  ret_from_fork+0x10/0x20
[  931.207035] ---[ end trace 0000000000000002 ]---

The driver shows this message only for the first spurious interrupt
by using WARN_ONCE(). Changing this to WARN() shows, that this is
happening quite frequently (up to once a second).

Since the eMMC 5.1 specification, where CQE and CQHCI are specified,
does not mention that spurious TCN interrupts for DCMDs can be simply
ignored, we must assume that using this feature is not working reliably.

The current implementation uses DCMD for REQ_OP_FLUSH only, and
I could not see any performance/power impact when disabling
this optional feature for RK3399.

Therefore this patch disables DCMDs for RK3399.

Signed-off-by: default avatarChristoph Muellner <christoph.muellner@theobroma-systems.com>
Signed-off-by: default avatarPhilipp Tomsich <philipp.tomsich@theobroma-systems.com>
Fixes: 84362d79

 ("mmc: sdhci-of-arasan: Add CQHCI support for arasan,sdhci-5.1")
Cc: stable@vger.kernel.org
[the corresponding code changes are queued for 5.2 so doing that as well]
Signed-off-by: default avatarHeiko Stuebner <heiko@sntech.de>
      a3eec13b
  3. Mar 18, 2019
  5. Mar 17, 2019
  7. Mar 16, 2019
  9. Mar 15, 2019
  11. Mar 14, 2019
    • Masahiro Yamada's avatar
      unicore32: simplify linker script generation for decompressor · c649bd59
      Masahiro Yamada authored 
      

When I was searching for unneeded $(KCONFIG_CONFIG) usages, I noticed
this strange build dependency.

It can use $(call if_changed,...) in case ZTEXTADDR and ZBSSADDR are
changed, but even a simpler way is to use the pattern rule in
scripts/Makefile.build. This is what arch/arm/boot/compressed/Makefile
does.

I did only build test. I confirmed equivalent vmlinux.lds was generated.

Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      c649bd59
    • Masahiro Yamada's avatar
      h8300: use cc-cross-prefix instead of hardcoding h8300-unknown-linux- · fc2b47b5
      Masahiro Yamada authored 
      It believe it is a bad idea to hardcode a specific compiler prefix
that may or may not be installed on a user's system. It is annoying
when testing features that should not require compilers at all.

For example, mrproper, headers_install, etc. should work without
any compiler.

They look like follows on my machine.

$ make ARCH=h8300 mrproper
./scripts/gcc-version.sh: line 26: h8300-unknown-linux-gcc: command not found
./scripts/gcc-version.sh: line 27: h8300-unknown-linux-gcc: command not found
make: h8300-unknown-linux-gcc: Command not found
make: h8300-unknown-linux-gcc: Command not found
  [ a bunch of the same error messages continue ]

$ make ARCH=h8300 headers_install
./scripts/gcc-version.sh: line 26: h8300-unknown-linux-gcc: command not found
./scripts/gcc-version.sh: line 27: h8300-unknown-linux-gcc: command not found
make: h8300-unknown-linux-gcc: Command not found
  HOSTCC  scripts/basic/fixdep
make: h8300-unknown-linux-gcc: Command not found
  WRAP    arch/h8300/include/generated/uapi/asm/kvm_para.h
  [ snip ]

The solution is to delete this line, or to use cc-cross-prefix like
some architectures do. I chose the latter as a moderate fixup.

I added an alternative 'h8300-linux-' because it is available at:

https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/8.1.0/



Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      fc2b47b5
    • Masahiro Yamada's avatar
      kbuild: move archive command to scripts/Makefile.lib · 898f5a00
      Masahiro Yamada authored 
      

scripts/Makefile.build and arch/s390/boot/Makefile use the same
command (thin archiving with symbol table creation).

Avoid the code duplication, and move it to scripts/Makefile.lib.

Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      898f5a00
    • Masahiro Yamada's avatar
      ia64: prefix header search path with $(srctree)/ · 393492b5
      Masahiro Yamada authored 
      Currently, the Kbuild core manipulates header search paths in a crazy
way [1].

To fix this mess, I want all Makefiles to add explicit $(srctree)/ to
the search paths in the srctree. Some Makefiles are already written in
that way, but not all. The goal of this work is to make the notation
consistent, and finally get rid of the gross hacks.

Having whitespaces after -I does not matter since commit 48f6e3cf
("kbuild: do not drop -I without parameter").

I removed some header search paths because I was able to build ia64
without them.

[1]: https://patchwork.kernel.org/patch/9632347/



Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      393492b5
  13. Mar 13, 2019
    • Mathieu Malaterre's avatar
      powerpc/64s: Include <asm/nmi.h> header file to fix a warning · de3c83c2
      Mathieu Malaterre authored 
      Make sure to include <asm/nmi.h> to provide the following prototype:
hv_nmi_check_nonrecoverable.

Remove the following warning treated as error (W=1):

  arch/powerpc/kernel/traps.c:393:6: error: no previous prototype for 'hv_nmi_check_nonrecoverable'

Fixes: ccd47702

 ("powerpc/64s: Fix HV NMI vs HV interrupt recoverability test")
Signed-off-by: default avatarMathieu Malaterre <malat@debian.org>
Reviewed-by: default avatarChristophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      de3c83c2
    • Alexey Kardashevskiy's avatar
      powerpc/powernv: Fix compile without CONFIG_TRACEPOINTS · 17028776
      Alexey Kardashevskiy authored 
      The functions returns s64 but the return statement is missing.
This adds the missing return statement.

Fixes: 75d9fc7f

 ("powerpc/powernv: move OPAL call wrapper tracing and interrupt handling to C")
Signed-off-by: default avatarAlexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      17028776
    • Mike Rapoport's avatar
      memblock: drop memblock_alloc_*_nopanic() variants · 26fb3dae
      Mike Rapoport authored 
      As all the memblock allocation functions return NULL in case of error
rather than panic(), the duplicates with _nopanic suffix can be removed.

Link: http://lkml.kernel.org/r/1548057848-15136-22-git-send-email-rppt@linux.ibm.com


Signed-off-by: default avatarMike Rapoport <rppt@linux.ibm.com>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>		[printk]
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Christoph Hellwig <hch@lst.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Guo Ren <ren_guo@c-sky.com>				[c-sky]
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Juergen Gross <jgross@suse.com>			[Xen]
Cc: Mark Salter <msalter@redhat.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      26fb3dae
    • Mike Rapoport's avatar
      treewide: add checks for the return value of memblock_alloc*() · 8a7f97b9
      Mike Rapoport authored 
      Add check for the return value of memblock_alloc*() functions and call
panic() in case of error.  The panic message repeats the one used by
panicing memblock allocators with adjustment of parameters to include
only relevant ones.

The replacement was mostly automated with semantic patches like the one
below with manual massaging of format strings.

  @@
  expression ptr, size, align;
  @@
  ptr = memblock_alloc(size, align);
  + if (!ptr)
  + 	panic("%s: Failed to allocate %lu bytes align=0x%lx\n", __func__, size, align);

[anders.roxell@linaro.org: use '%pa' with 'phys_addr_t' type]
  Link: http://lkml.kernel.org/r/20190131161046.21886-1-anders.roxell@linaro.org
[rppt@linux.ibm.com: fix format strings for panics after memblock_alloc]
  Link: http://lkml.kernel.org/r/1548950940-15145-1-git-send-email-rppt@linux.ibm.com
[rppt@linux.ibm.com: don't panic if the allocation in sparse_buffer_init fails]
  Link: http://lkml.kernel.org/r/20190131074018.GD28876@rapoport-lnx
[akpm@linux-foundation.org: fix xtensa printk warning]
Link: http://lkml.kernel.org/r/1548057848-15136-20-git-send-email-rppt@linux.ibm.com


Signed-off-by: default avatarMike Rapoport <rppt@linux.ibm.com>
Signed-off-by: default avatarAnders Roxell <anders.roxell@linaro.org>
Reviewed-by: Guo Ren <ren_guo@c-sky.com>		[c-sky]
Acked-by: Paul Burton <paul.burton@mips.com>		[MIPS]
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>	[s390]
Reviewed-by: Juergen Gross <jgross@suse.com>		[Xen]
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>	[m68k]
Acked-by: Max Filippov <jcmvbkbc@gmail.com>		[xtensa]
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Christoph Hellwig <hch@lst.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      8a7f97b9
    • Mike Rapoport's avatar
      sparc: add checks for the return value of memblock_alloc*() · b1e1c869
      Mike Rapoport authored 
      Add panic() calls if memblock_alloc*() returns NULL.

Most of the changes are simply addition of

        if(!ptr)
                panic();

statements after the calls to memblock_alloc*() variants.

Exceptions are pcpu_populate_pte() and kernel_map_range() that were
slightly refactored to accommodate the change.

Link: http://lkml.kernel.org/r/1548057848-15136-16-git-send-email-rppt@linux.ibm.com


Signed-off-by: default avatarMike Rapoport <rppt@linux.ibm.com>
Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Guo Ren <ren_guo@c-sky.com>				[c-sky]
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Juergen Gross <jgross@suse.com>			[Xen]
Cc: Mark Salter <msalter@redhat.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      b1e1c869
    • Mike Rapoport's avatar
      ia64: add checks for the return value of memblock_alloc*() · d80db5c1
      Mike Rapoport authored 
      Add panic() calls if memblock_alloc*() returns NULL.

Most of the changes are simply addition of

	if(!ptr)
		panic();

statements after the calls to memblock_alloc*() variants.

Exceptions are create_mem_map_page_table() and ia64_log_init() that were
slightly refactored to accommodate the change.

Link: http://lkml.kernel.org/r/1548057848-15136-15-git-send-email-rppt@linux.ibm.com


Signed-off-by: default avatarMike Rapoport <rppt@linux.ibm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Christoph Hellwig <hch@lst.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Guo Ren <ren_guo@c-sky.com>				[c-sky]
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Juergen Gross <jgross@suse.com>			[Xen]
Cc: Mark Salter <msalter@redhat.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      d80db5c1
    • Mike Rapoport's avatar
      arch: don't memset(0) memory returned by memblock_alloc() · 0240dfd5
      Mike Rapoport authored 
      memblock_alloc() already clears the allocated memory, no point in doing
it twice.

Link: http://lkml.kernel.org/r/1548057848-15136-14-git-send-email-rppt@linux.ibm.com


Signed-off-by: default avatarMike Rapoport <rppt@linux.ibm.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>	[m68k]
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Christoph Hellwig <hch@lst.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Guo Ren <ren_guo@c-sky.com>				[c-sky]
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Juergen Gross <jgross@suse.com>			[Xen]
Cc: Mark Salter <msalter@redhat.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      0240dfd5