[PATCH 0/9] added helper macros to remove duplicate code from probe functions of the platform drivers

From: Satendra Singh Thakur
Date: Sun Sep 15 2019 - 03:00:39 EST

1. For most of the platform drivers's probe include following steps

-memory allocation for driver's private structure
-getting io resources
-io remapping resources
-getting irq number
-registering irq
-setting driver's private data
-getting clock
-preparing and enabling clock

2. We have defined a set of macros to combine some or all of
the above mentioned steps. This will remove redundant/duplicate
code in drivers' probe functions of platform drivers.

devm_platform_probe_helper(pdev, priv, clk_name);
devm_platform_probe_helper_clk(pdev, priv, clk_name);
devm_platform_probe_helper_irq(pdev, priv, clk_name,
irq_hndlr, irq_flags, irq_name, irq_devid);
devm_platform_probe_helper_all(pdev, priv, clk_name,
irq_hndlr, irq_flags, irq_name, irq_devid);
devm_platform_probe_helper_all_data(pdev, priv, clk_name,
irq_hndlr, irq_flags, irq_name, irq_devid);

3. Code is made devres compatible (wherever required)
The functions: clk_get, request_irq, kzalloc, platform_get_resource
are replaced with their devm_* counterparts.

4. Few bugs are also fixed.

Satendra Singh Thakur (9):
probe/dma : added helper macros to remove redundant/duplicate code
from probe functions of the dma controller drivers
probe/dma/jz4740: removed redundant code from jz4740 dma controller's
probe function
probe/dma/zx: removed redundant code from zx dma controller's probe
probe/dma/qcom-bam: removed redundant code from qcom bam dma
controller's probe function
probe/dma/mtk-hs: removed redundant code from mediatek hs dma
controller's probe function
probe/dma/sun6i: removed redundant code from sun6i dma controller's
probe function
probe/dma/sun4i: removed redundant code from sun4i dma controller's
probe function
probe/dma/axi: removed redundant code from axi dma controller's probe
probe/dma/owl: removed redundant code from owl dma controller's probe

drivers/dma/dma-axi-dmac.c | 28 ++---
drivers/dma/dma-jz4740.c | 33 +++---
drivers/dma/mediatek/mtk-hsdma.c | 38 +++----
drivers/dma/owl-dma.c | 29 ++---
drivers/dma/qcom/bam_dma.c | 71 +++++-------
drivers/dma/sun4i-dma.c | 30 ++----
drivers/dma/sun6i-dma.c | 30 ++----
drivers/dma/zx_dma.c | 35 ++----
include/linux/probe-helper.h | 179 +++++++++++++++++++++++++++++++
9 files changed, 280 insertions(+), 193 deletions(-)
create mode 100644 include/linux/probe-helper.h