From patchwork Wed Nov 24 11:54:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 12636801 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5A54AC433F5 for ; Wed, 24 Nov 2021 12:54:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344320AbhKXM52 (ORCPT ); Wed, 24 Nov 2021 07:57:28 -0500 Received: from mail.kernel.org ([198.145.29.99]:32872 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346008AbhKXMz0 (ORCPT ); Wed, 24 Nov 2021 07:55:26 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id B5FD461547; Wed, 24 Nov 2021 12:31:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1637757117; bh=vN2naKVRYhRCg2dj5JfNdtQB/BzF9gyfbPAmRHli8CI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1Fb5HRql3A49PAtzMQ0vTCYbKQdn+oFucLo299BmMWf+C+qzmcbthfMxg9mF/Ooc0 zrUzcBF1h7MHxv5tjUYTsTmmy7Vx+dA37J3kHMjeoePZYp6vaBM5hekJnTco7DlUZ6 NKSzIi80XJMYjBBJxDKjmQAdzqziVEmosbfmR5m4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Thomas Bogendoerfer , Maciej Rozycki , linux-mips@vger.kernel.org, "Eric W. Biederman" Subject: [PATCH 4.19 064/323] signal/mips: Update (_save|_restore)_fp_context to fail with -EFAULT Date: Wed, 24 Nov 2021 12:54:14 +0100 Message-Id: <20211124115721.021574461@linuxfoundation.org> X-Mailer: git-send-email 2.34.0 In-Reply-To: <20211124115718.822024889@linuxfoundation.org> References: <20211124115718.822024889@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Eric W. Biederman commit 95bf9d646c3c3f95cb0be7e703b371db8da5be68 upstream. When an instruction to save or restore a register from the stack fails in _save_fp_context or _restore_fp_context return with -EFAULT. This change was made to r2300_fpu.S[1] but it looks like it got lost with the introduction of EX2[2]. This is also what the other implementation of _save_fp_context and _restore_fp_context in r4k_fpu.S does, and what is needed for the callers to be able to handle the error. Furthermore calling do_exit(SIGSEGV) from bad_stack is wrong because it does not terminate the entire process it just terminates a single thread. As the changed code was the only caller of arch/mips/kernel/syscall.c:bad_stack remove the problematic and now unused helper function. Cc: Thomas Bogendoerfer Cc: Maciej Rozycki Cc: linux-mips@vger.kernel.org [1] 35938a00ba86 ("MIPS: Fix ISA I FP sigcontext access violation handling") [2] f92722dc4545 ("MIPS: Correct MIPS I FP sigcontext layout") Cc: stable@vger.kernel.org Fixes: f92722dc4545 ("MIPS: Correct MIPS I FP sigcontext layout") Acked-by: Maciej W. Rozycki Acked-by: Thomas Bogendoerfer Link: https://lkml.kernel.org/r/20211020174406.17889-5-ebiederm@xmission.com Signed-off-by: Eric W. Biederman Signed-off-by: Greg Kroah-Hartman --- arch/mips/kernel/r2300_fpu.S | 4 ++-- arch/mips/kernel/syscall.c | 9 --------- 2 files changed, 2 insertions(+), 11 deletions(-) --- a/arch/mips/kernel/r2300_fpu.S +++ b/arch/mips/kernel/r2300_fpu.S @@ -29,8 +29,8 @@ #define EX2(a,b) \ 9: a,##b; \ .section __ex_table,"a"; \ - PTR 9b,bad_stack; \ - PTR 9b+4,bad_stack; \ + PTR 9b,fault; \ + PTR 9b+4,fault; \ .previous .set mips1 --- a/arch/mips/kernel/syscall.c +++ b/arch/mips/kernel/syscall.c @@ -235,12 +235,3 @@ SYSCALL_DEFINE3(cachectl, char *, addr, { return -ENOSYS; } - -/* - * If we ever come here the user sp is bad. Zap the process right away. - * Due to the bad stack signaling wouldn't work. - */ -asmlinkage void bad_stack(void) -{ - do_exit(SIGSEGV); -} From patchwork Wed Nov 24 11:57:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 12636819 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 114F7C433F5 for ; Wed, 24 Nov 2021 13:12:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347022AbhKXNPS (ORCPT ); Wed, 24 Nov 2021 08:15:18 -0500 Received: from mail.kernel.org ([198.145.29.99]:51816 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348456AbhKXNNN (ORCPT ); Wed, 24 Nov 2021 08:13:13 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3E47861A8A; Wed, 24 Nov 2021 12:42:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1637757775; bh=geWwvt+WcT0Vr9beU/Rq9/kGpE1RZ0NSTymtca8vwFs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XYLtaYpK7/TeRto7WCsMCMme85HzhOErK86I3/cnM4zTjf9smYXiz+tEBEkTtnyXH GDzKl8h3I5U79ojVylbG/rHSNmHEtl4qQpVQ7g/jE6afse6WdNhWqs+7pNYNeALU79 C7SHH7Zl/oe4Oufe9VP+54JHPvQLc3s4tCnfZPoA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, linux-mips@vger.kernel.org, Bart Van Assche , Thomas Bogendoerfer , Sasha Levin Subject: [PATCH 4.19 273/323] MIPS: sni: Fix the build Date: Wed, 24 Nov 2021 12:57:43 +0100 Message-Id: <20211124115728.101427761@linuxfoundation.org> X-Mailer: git-send-email 2.34.0 In-Reply-To: <20211124115718.822024889@linuxfoundation.org> References: <20211124115718.822024889@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Bart Van Assche [ Upstream commit c91cf42f61dc77b289784ea7b15a8531defa41c0 ] This patch fixes the following gcc 10 build error: arch/mips/sni/time.c: In function ‘a20r_set_periodic’: arch/mips/sni/time.c:15:26: error: unsigned conversion from ‘int’ to ‘u8’ {aka ‘volatile unsigned char’} changes value from ‘576’ to ‘64’ [-Werror=overflow] 15 | #define SNI_COUNTER0_DIV ((SNI_CLOCK_TICK_RATE / SNI_COUNTER2_DIV) / HZ) | ^ arch/mips/sni/time.c:21:45: note: in expansion of macro ‘SNI_COUNTER0_DIV’ 21 | *(volatile u8 *)(A20R_PT_CLOCK_BASE + 0) = SNI_COUNTER0_DIV; | ^~~~~~~~~~~~~~~~ Cc: linux-mips@vger.kernel.org Signed-off-by: Bart Van Assche Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin --- arch/mips/sni/time.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/mips/sni/time.c b/arch/mips/sni/time.c index dbace1f3e1a97..745ceb945fc50 100644 --- a/arch/mips/sni/time.c +++ b/arch/mips/sni/time.c @@ -18,14 +18,14 @@ static int a20r_set_periodic(struct clock_event_device *evt) { *(volatile u8 *)(A20R_PT_CLOCK_BASE + 12) = 0x34; wmb(); - *(volatile u8 *)(A20R_PT_CLOCK_BASE + 0) = SNI_COUNTER0_DIV; + *(volatile u8 *)(A20R_PT_CLOCK_BASE + 0) = SNI_COUNTER0_DIV & 0xff; wmb(); *(volatile u8 *)(A20R_PT_CLOCK_BASE + 0) = SNI_COUNTER0_DIV >> 8; wmb(); *(volatile u8 *)(A20R_PT_CLOCK_BASE + 12) = 0xb4; wmb(); - *(volatile u8 *)(A20R_PT_CLOCK_BASE + 8) = SNI_COUNTER2_DIV; + *(volatile u8 *)(A20R_PT_CLOCK_BASE + 8) = SNI_COUNTER2_DIV & 0xff; wmb(); *(volatile u8 *)(A20R_PT_CLOCK_BASE + 8) = SNI_COUNTER2_DIV >> 8; wmb(); From patchwork Wed Nov 24 11:57:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 12636821 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0A490C43217 for ; Wed, 24 Nov 2021 13:12:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347887AbhKXNPz (ORCPT ); Wed, 24 Nov 2021 08:15:55 -0500 Received: from mail.kernel.org ([198.145.29.99]:52064 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348708AbhKXNN4 (ORCPT ); Wed, 24 Nov 2021 08:13:56 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 8224F6125F; Wed, 24 Nov 2021 12:43:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1637757812; bh=QMe+54krMbbMLr1Hq0geTPP2d3FOMaCn/cdNKH3LI7E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fHJNNAElT+6+IkJ3z5FmBci4jrBaX3/THryd+JFfCuIW+DFSPeS0+WWYCaQoGRJaQ C7mSdC1bRRn0lBa60/Q1wjp2dirosNh3PTqYt9sKeew+JD+t3nk9/5NkdVWAEVQ+G0 s3Z9q9NiDw/YkgAIHXvPhJLicQE8l8IcZ60R7c+4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Randy Dunlap , kernel test robot , Thomas Bogendoerfer , Florian Fainelli , bcm-kernel-feedback-list@broadcom.com, linux-mips@vger.kernel.org, Paul Burton , Maxime Bizon , Ralf Baechle , Sasha Levin Subject: [PATCH 4.19 284/323] mips: BCM63XX: ensure that CPU_SUPPORTS_32BIT_KERNEL is set Date: Wed, 24 Nov 2021 12:57:54 +0100 Message-Id: <20211124115728.483024177@linuxfoundation.org> X-Mailer: git-send-email 2.34.0 In-Reply-To: <20211124115718.822024889@linuxfoundation.org> References: <20211124115718.822024889@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Randy Dunlap [ Upstream commit 5eeaafc8d69373c095e461bdb39e5c9b62228ac5 ] Several header files need info on CONFIG_32BIT or CONFIG_64BIT, but kconfig symbol BCM63XX does not provide that info. This leads to many build errors, e.g.: arch/mips/include/asm/page.h:196:13: error: use of undeclared identifier 'CAC_BASE' return x - PAGE_OFFSET + PHYS_OFFSET; arch/mips/include/asm/mach-generic/spaces.h:91:23: note: expanded from macro 'PAGE_OFFSET' #define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET) arch/mips/include/asm/io.h:134:28: error: use of undeclared identifier 'CAC_BASE' return (void *)(address + PAGE_OFFSET - PHYS_OFFSET); arch/mips/include/asm/mach-generic/spaces.h:91:23: note: expanded from macro 'PAGE_OFFSET' #define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET) arch/mips/include/asm/uaccess.h:82:10: error: use of undeclared identifier '__UA_LIMIT' return (__UA_LIMIT & (addr | (addr + size) | __ua_size(size))) == 0; Selecting the SYS_HAS_CPU_BMIPS* symbols causes SYS_HAS_CPU_BMIPS to be set, which then selects CPU_SUPPORT_32BIT_KERNEL, which causes CONFIG_32BIT to be set. (a bit more indirect than v1 [RFC].) Fixes: e7300d04bd08 ("MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs.") Signed-off-by: Randy Dunlap Reported-by: kernel test robot Cc: Thomas Bogendoerfer Cc: Florian Fainelli Cc: bcm-kernel-feedback-list@broadcom.com Cc: linux-mips@vger.kernel.org Cc: Paul Burton Cc: Maxime Bizon Cc: Ralf Baechle Suggested-by: Florian Fainelli Acked-by: Florian Fainelli Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin --- arch/mips/Kconfig | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index fb8554c41e803..e513528be3ad7 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -285,6 +285,9 @@ config BCM63XX select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN select SYS_HAS_EARLY_PRINTK + select SYS_HAS_CPU_BMIPS32_3300 + select SYS_HAS_CPU_BMIPS4350 + select SYS_HAS_CPU_BMIPS4380 select SWAP_IO_SPACE select GPIOLIB select HAVE_CLK From patchwork Wed Nov 24 11:58:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 12636835 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8BDE6C43219 for ; Wed, 24 Nov 2021 13:16:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345113AbhKXNTT (ORCPT ); Wed, 24 Nov 2021 08:19:19 -0500 Received: from mail.kernel.org ([198.145.29.99]:35228 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347005AbhKXNPP (ORCPT ); Wed, 24 Nov 2021 08:15:15 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 224F961AA7; Wed, 24 Nov 2021 12:43:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1637757836; bh=cbAkr7roA/XUOtkCmC8I3swOMtrHElogX+dp0d5mgIg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KRd6OXe0suvXn5DMIb4hO9dX9vLg5egxmCBoGIxu7O5SUukbMjQRF1E1n8WTKGE6Q nMD6j/6E0bpkh9FQnzS5ZXb6IUV9zGRodr+MZPMDu5+JKyFHq6T3fofZ6YuiDrT8UG Qwj6Rh8Ocv/a768nck0h/b99L46TKSj/47TMHQAU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Randy Dunlap , kernel test robot , "Russell King (Oracle)" , Artur Rojek , Paul Cercueil , linux-mips@vger.kernel.org, Jonathan Cameron , Lars-Peter Clausen , linux-iio@vger.kernel.org, Florian Fainelli , Andy Shevchenko , Russell King , bcm-kernel-feedback-list@broadcom.com, Jonas Gorski , Jonathan Cameron , Thomas Bogendoerfer , Sasha Levin Subject: [PATCH 4.19 291/323] mips: bcm63xx: add support for clk_get_parent() Date: Wed, 24 Nov 2021 12:58:01 +0100 Message-Id: <20211124115728.731315256@linuxfoundation.org> X-Mailer: git-send-email 2.34.0 In-Reply-To: <20211124115718.822024889@linuxfoundation.org> References: <20211124115718.822024889@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Randy Dunlap [ Upstream commit e8f67482e5a4bc8d0b65d606d08cb60ee123b468 ] BCM63XX selects HAVE_LEGACY_CLK but does not provide/support clk_get_parent(), so add a simple implementation of that function so that callers of it will build without errors. Fixes these build errors: mips-linux-ld: drivers/iio/adc/ingenic-adc.o: in function `jz4770_adc_init_clk_div': ingenic-adc.c:(.text+0xe4): undefined reference to `clk_get_parent' mips-linux-ld: drivers/iio/adc/ingenic-adc.o: in function `jz4725b_adc_init_clk_div': ingenic-adc.c:(.text+0x1b8): undefined reference to `clk_get_parent' Fixes: e7300d04bd08 ("MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs." ) Signed-off-by: Randy Dunlap Reported-by: kernel test robot Suggested-by: Russell King (Oracle) Cc: Artur Rojek Cc: Paul Cercueil Cc: linux-mips@vger.kernel.org Cc: Jonathan Cameron Cc: Lars-Peter Clausen Cc: linux-iio@vger.kernel.org Cc: Florian Fainelli Cc: Andy Shevchenko Cc: Russell King Cc: bcm-kernel-feedback-list@broadcom.com Cc: Jonas Gorski Reviewed-by: Andy Shevchenko Acked-by: Jonathan Cameron Acked-by: Russell King (Oracle) Acked-by: Florian Fainelli Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin --- arch/mips/bcm63xx/clk.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/mips/bcm63xx/clk.c b/arch/mips/bcm63xx/clk.c index 164115944a7fd..aba6e2d6a736c 100644 --- a/arch/mips/bcm63xx/clk.c +++ b/arch/mips/bcm63xx/clk.c @@ -381,6 +381,12 @@ void clk_disable(struct clk *clk) EXPORT_SYMBOL(clk_disable); +struct clk *clk_get_parent(struct clk *clk) +{ + return NULL; +} +EXPORT_SYMBOL(clk_get_parent); + unsigned long clk_get_rate(struct clk *clk) { if (!clk) From patchwork Wed Nov 24 11:58:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 12636837 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A760AC433FE for ; Wed, 24 Nov 2021 13:17:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347754AbhKXNUx (ORCPT ); Wed, 24 Nov 2021 08:20:53 -0500 Received: from mail.kernel.org ([198.145.29.99]:35226 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349240AbhKXNSy (ORCPT ); Wed, 24 Nov 2021 08:18:54 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3647E61AE4; Wed, 24 Nov 2021 12:45:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1637757953; bh=lOINc8zJAMoX3k8oG/uZ9gevZh0lJ56ObrmXG8BE5yU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ck2DmmB8jmSaS5t4ad5Q7xMBYOYFPZtlUBN6W0h7DAtN3QsVkUoRftKUEIEhUFnU3 dbvRwhvDUmz2Ehh7Bt8qA+0SexoGAv4JbygEmtuZkiTXrEpsjLfq3zkb0GjIc1nhtj vHZJUi0r0iEHFRg7xXhg3c5HCzR8FbakW4qrW9Z4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Randy Dunlap , "Russell King (Oracle)" , linux-mips@vger.kernel.org, John Crispin , Thomas Bogendoerfer , Jonathan Cameron , linux-iio@vger.kernel.org, Russell King , Andy Shevchenko , Jonathan Cameron , Sasha Levin Subject: [PATCH 4.19 292/323] mips: lantiq: add support for clk_get_parent() Date: Wed, 24 Nov 2021 12:58:02 +0100 Message-Id: <20211124115728.764318250@linuxfoundation.org> X-Mailer: git-send-email 2.34.0 In-Reply-To: <20211124115718.822024889@linuxfoundation.org> References: <20211124115718.822024889@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Randy Dunlap [ Upstream commit fc1aabb088860d6cf9dd03612b7a6f0de91ccac2 ] Provide a simple implementation of clk_get_parent() in the lantiq subarch so that callers of it will build without errors. Fixes this build error: ERROR: modpost: "clk_get_parent" [drivers/iio/adc/ingenic-adc.ko] undefined! Fixes: 171bb2f19ed6 ("MIPS: Lantiq: Add initial support for Lantiq SoCs") Signed-off-by: Randy Dunlap Suggested-by: Russell King (Oracle) Cc: linux-mips@vger.kernel.org Cc: John Crispin Cc: Thomas Bogendoerfer Cc: Jonathan Cameron Cc: linux-iio@vger.kernel.org Cc: Russell King Cc: Andy Shevchenko Acked-by: Jonathan Cameron Acked-by: John Crispin Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin --- arch/mips/lantiq/clk.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/mips/lantiq/clk.c b/arch/mips/lantiq/clk.c index a263d1b751ffe..a8e309dcd38d7 100644 --- a/arch/mips/lantiq/clk.c +++ b/arch/mips/lantiq/clk.c @@ -160,6 +160,12 @@ void clk_deactivate(struct clk *clk) } EXPORT_SYMBOL(clk_deactivate); +struct clk *clk_get_parent(struct clk *clk) +{ + return NULL; +} +EXPORT_SYMBOL(clk_get_parent); + static inline u32 get_counter_resolution(void) { u32 res;