From mboxrd@z Thu Jan 1 00:00:00 1970 From: viresh.kumar@st.com (viresh kumar) Date: Tue, 1 Mar 2011 13:57:17 +0530 Subject: [RFC] device.h: add device_set_platdata routine In-Reply-To: <20110301075953.GR22310@pengutronix.de> References: <5c561db378360ad1763da41f8350c7be816daa06.1298953633.git.viresh.kumar@st.com> <20110301075953.GR22310@pengutronix.de> Message-ID: <4D6CADE5.6000206@st.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 03/01/2011 01:29 PM, Uwe Kleine-K?nig wrote: > [added gregkh and lkml to Cc:] > thanks. > On Tue, Mar 01, 2011 at 10:03:20AM +0530, Viresh Kumar wrote: >> device.h supports device_get_platdata but doesn't support device_set_platdata. >> This routine is required by platforms in which device structure is declared >> in a machine specific file and platform data comes from board specific file. >> >> This will be used by SPEAr patches sent in separate patch series. >> >> Signed-off-by: Viresh Kumar >> --- >> include/linux/device.h | 5 +++++ >> 1 files changed, 5 insertions(+), 0 deletions(-) >> >> diff --git a/include/linux/device.h b/include/linux/device.h >> index 1bf5cf0..6ce0f20 100644 >> --- a/include/linux/device.h >> +++ b/include/linux/device.h >> @@ -576,6 +576,11 @@ static inline void *dev_get_platdata(const struct device *dev) >> return dev->platform_data; >> } >> >> +static inline void dev_set_platdata(struct device *dev, void *platdata) >> +{ >> + dev->platform_data = platdata; >> +} >> + > Note that dev->platform_data was designed to hold dynamically allocated > memory, at least it's kfreed in platform_device_release. And note there > is platform_device_add_data that kmemdups its argument into > pdev->dev.platform_data. > Ok. So we should use platform_device_add_data instead and mark our platform data's struct as __init. So that it doesn't consume any memory after this routine is done?? > Compared to your dev_set_platdata platform_device_add_data only works > for platform_devices, don't know if it's worth to change that. > Currently i need this for platform devs only. So its good enough for me. -- viresh