* [PATCH 0/1] ptp: simplify getting .driver_data
@ 2018-10-21 20:00 Wolfram Sang
2018-10-21 20:00 ` [PATCH 1/1] ptp: ptp_dte: " Wolfram Sang
0 siblings, 1 reply; 4+ messages in thread
From: Wolfram Sang @ 2018-10-21 20:00 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-renesas-soc, Wolfram Sang, netdev
I got tired of fixing this in Renesas drivers manually, so I took the big
hammer. Remove this cumbersome code pattern which got copy-pasted too much
already:
- struct platform_device *pdev = to_platform_device(dev);
- struct ep93xx_keypad *keypad = platform_get_drvdata(pdev);
+ struct ep93xx_keypad *keypad = dev_get_drvdata(dev);
A branch, tested by buildbot, can be found here:
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git coccinelle/get_drvdata
I have been asked if it couldn't be done for dev_set_drvdata as well. I checked
it and did not find one occasion where it could be simplified like this. Not
much of a surprise because driver_data is usually set in probe() functions
which access struct platform_device in many other ways.
I am open for other comments, suggestions, too, of course.
Here is the cocci-script I created:
@@
struct device* d;
identifier pdev;
expression *ptr;
@@
(
- struct platform_device *pdev = to_platform_device(d);
|
- struct platform_device *pdev;
...
- pdev = to_platform_device(d);
)
<... when != pdev
- &pdev->dev
+ d
...>
ptr =
- platform_get_drvdata(pdev)
+ dev_get_drvdata(d)
<... when != pdev
- &pdev->dev
+ d
...>
Kind regards,
Wolfram
Wolfram Sang (1):
ptp: ptp_dte: simplify getting .driver_data
drivers/ptp/ptp_dte.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--
2.19.0
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH 1/1] ptp: ptp_dte: simplify getting .driver_data
2018-10-21 20:00 [PATCH 0/1] ptp: simplify getting .driver_data Wolfram Sang
@ 2018-10-21 20:00 ` Wolfram Sang
2018-10-22 22:43 ` Richard Cochran
2018-10-23 2:49 ` David Miller
0 siblings, 2 replies; 4+ messages in thread
From: Wolfram Sang @ 2018-10-21 20:00 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-renesas-soc, Wolfram Sang, Richard Cochran, netdev
We should get 'driver_data' from 'struct device' directly. Going via
platform_device is an unneeded step back and forth.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
Build tested only. buildbot is happy.
drivers/ptp/ptp_dte.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/ptp/ptp_dte.c b/drivers/ptp/ptp_dte.c
index a7dc43368df4..5b6393e3ea27 100644
--- a/drivers/ptp/ptp_dte.c
+++ b/drivers/ptp/ptp_dte.c
@@ -288,8 +288,7 @@ static int ptp_dte_remove(struct platform_device *pdev)
#ifdef CONFIG_PM_SLEEP
static int ptp_dte_suspend(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct ptp_dte *ptp_dte = platform_get_drvdata(pdev);
+ struct ptp_dte *ptp_dte = dev_get_drvdata(dev);
u8 i;
for (i = 0; i < DTE_NUM_REGS_TO_RESTORE; i++) {
@@ -305,8 +304,7 @@ static int ptp_dte_suspend(struct device *dev)
static int ptp_dte_resume(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct ptp_dte *ptp_dte = platform_get_drvdata(pdev);
+ struct ptp_dte *ptp_dte = dev_get_drvdata(dev);
u8 i;
for (i = 0; i < DTE_NUM_REGS_TO_RESTORE; i++) {
--
2.19.0
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH 1/1] ptp: ptp_dte: simplify getting .driver_data
2018-10-21 20:00 ` [PATCH 1/1] ptp: ptp_dte: " Wolfram Sang
@ 2018-10-22 22:43 ` Richard Cochran
2018-10-23 2:49 ` David Miller
1 sibling, 0 replies; 4+ messages in thread
From: Richard Cochran @ 2018-10-22 22:43 UTC (permalink / raw)
To: Wolfram Sang; +Cc: linux-kernel, linux-renesas-soc, netdev
On Sun, Oct 21, 2018 at 10:00:39PM +0200, Wolfram Sang wrote:
> We should get 'driver_data' from 'struct device' directly. Going via
> platform_device is an unneeded step back and forth.
Acked-by: Richard Cochran <richardcochran@gmail.com>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 1/1] ptp: ptp_dte: simplify getting .driver_data
2018-10-21 20:00 ` [PATCH 1/1] ptp: ptp_dte: " Wolfram Sang
2018-10-22 22:43 ` Richard Cochran
@ 2018-10-23 2:49 ` David Miller
1 sibling, 0 replies; 4+ messages in thread
From: David Miller @ 2018-10-23 2:49 UTC (permalink / raw)
To: wsa+renesas; +Cc: linux-kernel, linux-renesas-soc, richardcochran, netdev
From: Wolfram Sang <wsa+renesas@sang-engineering.com>
Date: Sun, 21 Oct 2018 22:00:39 +0200
> We should get 'driver_data' from 'struct device' directly. Going via
> platform_device is an unneeded step back and forth.
>
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Applied.
^ permalink raw reply [flat|nested] 4+ messages in thread
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2018-10-21 20:00 [PATCH 0/1] ptp: simplify getting .driver_data Wolfram Sang
2018-10-21 20:00 ` [PATCH 1/1] ptp: ptp_dte: " Wolfram Sang
2018-10-22 22:43 ` Richard Cochran
2018-10-23 2:49 ` David Miller
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