From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932538AbdIRNDy (ORCPT ); Mon, 18 Sep 2017 09:03:54 -0400 Received: from mout.gmx.net ([212.227.17.21]:51633 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752112AbdIRNDw (ORCPT ); Mon, 18 Sep 2017 09:03:52 -0400 From: Jan Kandziora To: GregKH , LKML Cc: Evgeniy Polyakov , Linux-I2C Subject: [PATCH v4 1/2] wire: export w1_touch_bit Date: Mon, 18 Sep 2017 15:03:45 +0200 Message-Id: <20170918130346.3886-1-jjj@gmx.de> X-Mailer: git-send-email 2.13.3 X-Provags-ID: V03:K0:XKxMTEGhFJ1U3GW3iL7m/J8o1CcA5EUnoGeovhAKM76/BR2dt0S /XpHrgvTB7dDQFMNlBbPvjnKJbitd7yg0UqybfaZq2NFWIw4C7LYbYcB9+xtonNIQ0AitBM 48mskHhfj1AZlhuFkPWtkxTWLFpGEq3iVsDbi5TdhpfQZEntwQbMq4LOEeq3RfAGS7SyZDH HCXQj9A6y/yNuM3OewP4w== X-UI-Out-Filterresults: notjunk:1;V01:K0:8xkWNbSMfYA=:dc6fdHtAXYAR/7qjMisHOk KaYe8PuupFFyjRt0WVPig79FxW9Ae1CWd15+mw8Zkrq9zMtXcW22aXcKK61G9ZuNrTwknDAWS OgtYfx/vkv8UY3BaKvQ7/wmrq6Cw3YGyN1aO/Bi9f9zc7zfZoBmD8M5iTVVLZjaixy7EHc6Er Vr8zAduZgrLRRJZ4kcx2Ge6+aZKeI7cH5ie6RYaPfOmom0cW5CByTmcKImCabbUzBAoiutoXy IC0dbUTq1UOD0xyFoORskPksm7I5TQhfPC/VXACG5k2R6hspM2R755/pWVUfXoiG04A1JwOw4 nVnXxQtNzEaBTk5crG7bZJQWmkVdlzq+rxVpKQFGnbLBMymsJK7USSouX/JbEP11X555hz79v oCI87Mdyvaou/WJUus/6O67ndcP4DZEmK9+hpXKASkV6124Ef9+z63p2ie0Aum0gdmbdoyHrT H6JPmQCXa8SgNJ3P1mM5CgVvrAXIODSvwDAAGVN+AYWf6vRdqJrPYlBX8vo3LKr/XXz17gq16 erIPn2GUSYMOB/ZljMgCa3oQ40HTuaxQgg+TqYxonKicLI+ZwlaNiYJjkNZruzChIVIc3IzM9 R+m8dvlFurU84L4vjgJaCrwe29ku/tUncumk1lWHfY9gtthmngT57/r+jCm8yOqMsTAi/G71Z LGuy26SOGM2fH+1jAbdrjQ2GCFdWKROn0br49JE8Es5NDTUHmjwQ0/s2vUFzeaTY4sjs5sRax 6msZn8A9LurKzFs3U4YZJoucPgRrif5bEIh5O8W+CF02B/f//0jLTBXs+59+cP5J3j77csfK+ uLeOswjg2lfG+tBw1cp0Qli6HUmOQ== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The w1_ds28e17 driver from the next part of this patch needs to emit single-bit read timeslots to the DS28E17. The w1 subsystem already has this function but it is not exported outside drivers/w1/w1_io.c This subpatch exports the w1_touch_bit symbol with EXPORT_SYMBOL_GPL, same as the other exported symbols in drivers/w1/w1_io.c May be also useful later for writing drivers for other Onewire chips which do single-bit communication. Signed-off-by: Jan Kandziora --- Changes in v4 against v3 in this subpatch: - adapted to linux-4.12.0 No changes in v3 against v2,v1 in this subpatch. drivers/w1/w1.h | 1 + drivers/w1/w1_io.c | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/w1/w1.h b/drivers/w1/w1.h index 758a7a6..e7af855 100644 --- a/drivers/w1/w1.h +++ b/drivers/w1/w1.h @@ -295,6 +295,7 @@ int w1_attach_slave_device(struct w1_master *dev, struct w1_reg_num *rn); int w1_slave_detach(struct w1_slave *sl); u8 w1_triplet(struct w1_master *dev, int bdir); +u8 w1_touch_bit(struct w1_master *dev, int bit); void w1_write_8(struct w1_master *, u8); u8 w1_read_8(struct w1_master *); int w1_reset_bus(struct w1_master *); diff --git a/drivers/w1/w1_io.c b/drivers/w1/w1_io.c index 1134e6b..4bb77a1 100644 --- a/drivers/w1/w1_io.c +++ b/drivers/w1/w1_io.c @@ -58,7 +58,7 @@ static u8 w1_read_bit(struct w1_master *dev); * @dev: the master device * @bit: 0 - write a 0, 1 - write a 0 read the level */ -static u8 w1_touch_bit(struct w1_master *dev, int bit) +u8 w1_touch_bit(struct w1_master *dev, int bit) { if (dev->bus_master->touch_bit) return dev->bus_master->touch_bit(dev->bus_master->data, bit); @@ -69,6 +69,7 @@ static u8 w1_touch_bit(struct w1_master *dev, int bit) return 0; } } +EXPORT_SYMBOL_GPL(w1_touch_bit); /** * w1_write_bit() - Generates a write-0 or write-1 cycle. -- 2.13.3