From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shobhit Kumar Subject: [v3 1/7] gpiolib: Add support for removing registered consumer lookup table Date: Fri, 26 Jun 2015 14:32:04 +0530 Message-ID: <1435309330-50725-2-git-send-email-shobhit.kumar@intel.com> References: <1435309330-50725-1-git-send-email-shobhit.kumar@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1435309330-50725-1-git-send-email-shobhit.kumar@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: linux-pwm , intel-gfx , linux-kernel , dri-devel , linux-gpio Cc: Alexandre Courbot , Paul Bolle , Samuel Ortiz , Povilas Staniulis , Jani Nikula , Shobhit Kumar , Linus Walleij , varkabhadram@gmail.com, Paul Gortmaker , bloften80@gmail.com, David Airlie , Chih-Wei Huang , Thierry Reding , Daniel Vetter , Lee Jones List-Id: linux-gpio@vger.kernel.org SW4gY2FzZSB3ZSB1bmxvYWQgYW5kIGxvYWQgYSBkcml2ZXIgbW9kdWxlIGFnYWluIHRoYXQgaXMg cmVnaXN0ZXJpbmcgYQpsb29rdXAgdGFibGUsIHdpdGhvdXQgdGhpcyBpdCB3aWxsIHJlc3VsdCBp biBtdWx0aXBsZSBlbnRyaWVzLiBQcm92aWRlCmFuIG9wdGlvbiB0byByZW1vdmUgdGhlIGxvb2t1 cCB0YWJsZSBvbiBkcml2ZXIgdW5sb2FkCgpDYzogU2FtdWVsIE9ydGl6IDxzYW1lb0BsaW51eC5p bnRlbC5jb20+CkNjOiBMaW51cyBXYWxsZWlqIDxsaW51cy53YWxsZWlqQGxpbmFyby5vcmc+CkNj OiBBbGV4YW5kcmUgQ291cmJvdCA8Z251cm91QGdtYWlsLmNvbT4KQ2M6IFRoaWVycnkgUmVkaW5n IDx0aGllcnJ5LnJlZGluZ0BnbWFpbC5jb20+ClJldmlld2VkLWJ5OiBBbGV4YW5kcmUgQ291cmJv dCA8YWNvdXJib3RAbnZpZGlhLmNvbT4KUmV2aWV3ZWQtYnk6IExpbnVzIFdhbGxlaWogPGxpbnVz LndhbGxlaWpAbGluYXJvLm9yZz4KVGVzdGVkLWJ5OiBWaWxsZSBTeXJqw6Rsw6QgPHZpbGxlLnN5 cmphbGFAbGludXguaW50ZWwuY29tPgpTaWduZWQtb2ZmLWJ5OiBTaG9iaGl0IEt1bWFyIDxzaG9i aGl0Lmt1bWFyQGludGVsLmNvbT4KLS0tCnYyOiBDY2luZyBtYWludGFpbmVycwp2MzogQ29ycmVj dCB0aGUgc3ViamVjdCBsaW5lIChMZWUgam9uZXMpCgogZHJpdmVycy9ncGlvL2dwaW9saWIuYyAg ICAgICB8IDEzICsrKysrKysrKysrKysKIGluY2x1ZGUvbGludXgvZ3Bpby9tYWNoaW5lLmggfCAg MSArCiAyIGZpbGVzIGNoYW5nZWQsIDE0IGluc2VydGlvbnMoKykKCmRpZmYgLS1naXQgYS9kcml2 ZXJzL2dwaW8vZ3Bpb2xpYi5jIGIvZHJpdmVycy9ncGlvL2dwaW9saWIuYwppbmRleCA5NTdlZGU1 Li45ZDNlYTRlIDEwMDY0NAotLS0gYS9kcml2ZXJzL2dwaW8vZ3Bpb2xpYi5jCisrKyBiL2RyaXZl cnMvZ3Bpby9ncGlvbGliLmMKQEAgLTE2NzUsNiArMTY3NSwxOSBAQCB2b2lkIGdwaW9kX2FkZF9s b29rdXBfdGFibGUoc3RydWN0IGdwaW9kX2xvb2t1cF90YWJsZSAqdGFibGUpCiAJbXV0ZXhfdW5s b2NrKCZncGlvX2xvb2t1cF9sb2NrKTsKIH0KIAorLyoqCisgKiBncGlvZF9yZW1vdmVfbG9va3Vw X3RhYmxlKCkgLSB1bnJlZ2lzdGVyIEdQSU8gZGV2aWNlIGNvbnN1bWVycworICogQHRhYmxlOiB0 YWJsZSBvZiBjb25zdW1lcnMgdG8gdW5yZWdpc3RlcgorICovCit2b2lkIGdwaW9kX3JlbW92ZV9s b29rdXBfdGFibGUoc3RydWN0IGdwaW9kX2xvb2t1cF90YWJsZSAqdGFibGUpCit7CisJbXV0ZXhf bG9jaygmZ3Bpb19sb29rdXBfbG9jayk7CisKKwlsaXN0X2RlbCgmdGFibGUtPmxpc3QpOworCisJ bXV0ZXhfdW5sb2NrKCZncGlvX2xvb2t1cF9sb2NrKTsKK30KKwogc3RhdGljIHN0cnVjdCBncGlv X2Rlc2MgKm9mX2ZpbmRfZ3BpbyhzdHJ1Y3QgZGV2aWNlICpkZXYsIGNvbnN0IGNoYXIgKmNvbl9p ZCwKIAkJCQkgICAgICB1bnNpZ25lZCBpbnQgaWR4LAogCQkJCSAgICAgIGVudW0gZ3Bpb19sb29r dXBfZmxhZ3MgKmZsYWdzKQpkaWZmIC0tZ2l0IGEvaW5jbHVkZS9saW51eC9ncGlvL21hY2hpbmUu aCBiL2luY2x1ZGUvbGludXgvZ3Bpby9tYWNoaW5lLmgKaW5kZXggZTI3MDYxNC4uYzBkNzEyZCAx MDA2NDQKLS0tIGEvaW5jbHVkZS9saW51eC9ncGlvL21hY2hpbmUuaAorKysgYi9pbmNsdWRlL2xp bnV4L2dwaW8vbWFjaGluZS5oCkBAIC01Nyw1ICs1Nyw2IEBAIHN0cnVjdCBncGlvZF9sb29rdXBf dGFibGUgewogfQogCiB2b2lkIGdwaW9kX2FkZF9sb29rdXBfdGFibGUoc3RydWN0IGdwaW9kX2xv b2t1cF90YWJsZSAqdGFibGUpOwordm9pZCBncGlvZF9yZW1vdmVfbG9va3VwX3RhYmxlKHN0cnVj dCBncGlvZF9sb29rdXBfdGFibGUgKnRhYmxlKTsKIAogI2VuZGlmIC8qIF9fTElOVVhfR1BJT19N QUNISU5FX0ggKi8KLS0gCjEuOS4xCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVl ZGVza3RvcC5vcmcKaHR0cDovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZv L2ludGVsLWdmeAo= From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752466AbbFZJFJ (ORCPT ); Fri, 26 Jun 2015 05:05:09 -0400 Received: from mga11.intel.com ([192.55.52.93]:32566 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751717AbbFZJC1 (ORCPT ); Fri, 26 Jun 2015 05:02:27 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,683,1427785200"; d="scan'208";a="718042656" From: Shobhit Kumar To: linux-pwm , intel-gfx , linux-kernel , dri-devel , linux-gpio Cc: Paul Bolle , Jani Nikula , Samuel Ortiz , Alexandre Courbot , David Airlie , Povilas Staniulis , Chih-Wei Huang , Thierry Reding , Daniel Vetter , Lee Jones , Linus Walleij , Paul Gortmaker , bloften80@gmail.com, varkabhadram@gmail.com, Shobhit Kumar Subject: [v3 1/7] gpiolib: Add support for removing registered consumer lookup table Date: Fri, 26 Jun 2015 14:32:04 +0530 Message-Id: <1435309330-50725-2-git-send-email-shobhit.kumar@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1435309330-50725-1-git-send-email-shobhit.kumar@intel.com> References: <1435309330-50725-1-git-send-email-shobhit.kumar@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In case we unload and load a driver module again that is registering a lookup table, without this it will result in multiple entries. Provide an option to remove the lookup table on driver unload Cc: Samuel Ortiz Cc: Linus Walleij Cc: Alexandre Courbot Cc: Thierry Reding Reviewed-by: Alexandre Courbot Reviewed-by: Linus Walleij Tested-by: Ville Syrjälä Signed-off-by: Shobhit Kumar --- v2: Ccing maintainers v3: Correct the subject line (Lee jones) drivers/gpio/gpiolib.c | 13 +++++++++++++ include/linux/gpio/machine.h | 1 + 2 files changed, 14 insertions(+) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 957ede5..9d3ea4e 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1675,6 +1675,19 @@ void gpiod_add_lookup_table(struct gpiod_lookup_table *table) mutex_unlock(&gpio_lookup_lock); } +/** + * gpiod_remove_lookup_table() - unregister GPIO device consumers + * @table: table of consumers to unregister + */ +void gpiod_remove_lookup_table(struct gpiod_lookup_table *table) +{ + mutex_lock(&gpio_lookup_lock); + + list_del(&table->list); + + mutex_unlock(&gpio_lookup_lock); +} + static struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id, unsigned int idx, enum gpio_lookup_flags *flags) diff --git a/include/linux/gpio/machine.h b/include/linux/gpio/machine.h index e270614..c0d712d 100644 --- a/include/linux/gpio/machine.h +++ b/include/linux/gpio/machine.h @@ -57,5 +57,6 @@ struct gpiod_lookup_table { } void gpiod_add_lookup_table(struct gpiod_lookup_table *table); +void gpiod_remove_lookup_table(struct gpiod_lookup_table *table); #endif /* __LINUX_GPIO_MACHINE_H */ -- 1.9.1