[PATCH v4 0/5] Introduce a new helper macro DEFINE_SHOW_STORE_ATTRIBUTE at seq_file.c

[Luo Jiaxing <luojiaxing@huawei.com>]

We already own DEFINE_SHOW_ATTRIBUTE() helper macro for defining attribute
for read-only file, but we found many of drivers also want a helper macro
for read-write file too.

So we add this macro to help decrease code duplication.

---
 v1->v2:
        1.Rename DEFINE_STORE_ATTRIBUTE() to DEFINE_SHOW_STORE_ATTRIBUTE().
	2.AI Viro points out that he doesn't like the definition of macros
	  like DEFINE_SHOW_ATTRIBUTE.
 v2->v3:
        1.Fixed some spelling mistakes in commit.
        2.Revision description are added for easy tracing.

 v3->v4:
	1.Add AI Viro's comment to v1->v2's revision description.
	2.Fixed a spelling mistakes of "marco" to "macro".
---

Luo Jiaxing (5):
  seq_file: Introduce DEFINE_SHOW_STORE_ATTRIBUTE() helper macro
  scsi: hisi_sas: Introduce DEFINE_SHOW_STORE_ATTRIBUTE for debugfs
  scsi: qla2xxx: Introduce DEFINE_SHOW_STORE_ATTRIBUTE for debugfs
  usb: dwc3: debugfs: Introduce DEFINE_SHOW_STORE_ATTRIBUTE
  drm/i915/display: Introduce DEFINE_SHOW_STORE_ATTRIBUTE for debugfs

 .../gpu/drm/i915/display/intel_display_debugfs.c   |  55 +--------
 drivers/scsi/hisi_sas/hisi_sas_main.c              | 135 +++------------------
 drivers/scsi/qla2xxx/qla_dfs.c                     |  19 +--
 drivers/usb/dwc3/debugfs.c                         |  52 +-------
 include/linux/seq_file.h                           |  15 +++
 5 files changed, 41 insertions(+), 235 deletions(-)

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2.7.4