linux-kernel - [PATCH 00/19] Fixes related to incorrect assignment of signed results function

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Date:	Thu, 24 Sep 2015 16:00:08 +0200
From:	Andrzej Hajda <a.hajda@...sung.com>
To:	linux-kernel@...r.kernel.org
Cc:	Andrzej Hajda <a.hajda@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>
Subject: [PATCH 00/19] Fixes related to incorrect assignment of signed results
 function

Hi,

This is another set of independent patches. The only connection
between them is that they try to address problems spotted by proposed
coccinelle semantic patch assign_signed_to_unsigned.cocci[1].

This semantic patch tries to find bugs, where signed result of function
is lost due to conversion to unsigned value. To decrease number of
false positives it looks if after the call there is comparison of
the result variable with 0.
In pseudo-code it looks like:
    unsigned = signed_function(...);
    ...
    if (unsigned ( < | <= ) 0 )
	...
This patchset contains mainly real bug fixes. Only last three patches
do not fix real bugs, they just proposes change of types to avoid
conversions int -> unsigned.

The patches are based on linux-next.

[1]: http://permalink.gmane.org/gmane.linux.kernel/2046107

Regards
Andrzej


Andrzej Hajda (19):
  SUNRPC: fix variable type
  spi: davinci: fix handling platform_get_irq result
  libata: samsung_cf: fix handling platform_get_irq result
  v4l: omap3isp: fix handling platform_get_irq result
  media: am437x-vpfe: fix handling platform_get_irq result
  staging: media: omap4iss: fix handling platform_get_irq result
  net: hisilicon: fix handling platform_get_irq result
  clk: st: fix handling result of of_property_count_strings
  dmaengine: xgene-dma: fix handling xgene_dma_get_ring_size result
  cx231xx: fix handling cx231xx_read_i2c_data result
  clocksource: fix __ftm_clk_init result
  extcon: rt8973a: fix handling regmap_irq_get_virq result
  extcon: sm5502: fix handling regmap_irq_get_virq result
  sony-laptop: fix handling sony_nc_hotkeys_decode result
  KVM: PPC: e500: fix handling local_sid_lookup result
  r8169: fix handling rtl_readphy result
  tools: bpf_jit_disasm: make get_last_jit_image return unsigned
  mac80211: make ieee80211_new_mesh_header return unsigned
  block: nvme-scsi: make nvme_trans_get_blk_desc_len return unsigned

 arch/powerpc/kvm/e500.c                     |  3 ++-
 drivers/ata/pata_samsung_cf.c               |  5 ++---
 drivers/block/nvme-scsi.c                   |  2 +-
 drivers/clk/st/clk-flexgen.c                |  7 ++++---
 drivers/clocksource/fsl_ftm_timer.c         |  8 ++++----
 drivers/dma/xgene-dma.c                     |  9 ++++++---
 drivers/extcon/extcon-rt8973a.c             |  2 +-
 drivers/extcon/extcon-sm5502.c              |  2 +-
 drivers/media/platform/am437x/am437x-vpfe.c |  5 +++--
 drivers/media/platform/omap3isp/isp.c       |  5 +++--
 drivers/media/usb/cx231xx/cx231xx-video.c   |  3 ++-
 drivers/net/ethernet/hisilicon/hip04_eth.c  |  2 +-
 drivers/net/ethernet/realtek/r8169.c        |  2 +-
 drivers/platform/x86/sony-laptop.c          | 12 ++++++++----
 drivers/spi/spi-davinci.c                   |  7 ++++---
 drivers/staging/media/omap4iss/iss.c        |  5 +++--
 net/mac80211/mesh.c                         |  2 +-
 net/sunrpc/xprtsock.c                       |  2 +-
 tools/net/bpf_jit_disasm.c                  |  2 +-
 19 files changed, 49 insertions(+), 36 deletions(-)

-- 
1.9.1

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