From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:43623 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965018AbbJRCva (ORCPT ); Sat, 17 Oct 2015 22:51:30 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tomasz Figa , Michael Turquette , Thomas Abraham , Dan Carpenter , Krzysztof Kozlowski , Javier Martinez Canillas , Sylwester Nawrocki , Bartlomiej Zolnierkiewicz , Stephen Boyd Subject: [PATCH 4.2 245/258] clk: samsung: fix cpu clocks flags checking Date: Sat, 17 Oct 2015 18:59:18 -0700 Message-Id: <20151018014741.561656086@linuxfoundation.org> In-Reply-To: <20151018014729.976101177@linuxfoundation.org> References: <20151018014729.976101177@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: stable-owner@vger.kernel.org List-ID: 4.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bartlomiej Zolnierkiewicz commit 9e294bf88a583825a413df408b9fe9e658fb93ac upstream. CLK_CPU_HAS_DIV1 and CLK_CPU_NEEDS_DEBUG_ALT_DIV masks were incorrectly used as a bit numbers. Fix it. Tested on Exynos4210 based Origen board and on Exynos5250 based Arndale board. Cc: Tomasz Figa Cc: Michael Turquette Cc: Thomas Abraham Fixes: ddeac8d96 ("clk: samsung: add infrastructure to register cpu clocks") Reported-by: Dan Carpenter Reviewed-by: Krzysztof Kozlowski Reviewed-by: Javier Martinez Canillas Acked-by: Sylwester Nawrocki Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Stephen Boyd Signed-off-by: Greg Kroah-Hartman --- drivers/clk/samsung/clk-cpu.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) --- a/drivers/clk/samsung/clk-cpu.c +++ b/drivers/clk/samsung/clk-cpu.c @@ -161,7 +161,7 @@ static int exynos_cpuclk_pre_rate_change * the values for DIV_COPY and DIV_HPM dividers need not be set. */ div0 = cfg_data->div0; - if (test_bit(CLK_CPU_HAS_DIV1, &cpuclk->flags)) { + if (cpuclk->flags & CLK_CPU_HAS_DIV1) { div1 = cfg_data->div1; if (readl(base + E4210_SRC_CPU) & E4210_MUX_HPM_MASK) div1 = readl(base + E4210_DIV_CPU1) & @@ -182,7 +182,7 @@ static int exynos_cpuclk_pre_rate_change alt_div = DIV_ROUND_UP(alt_prate, tmp_rate) - 1; WARN_ON(alt_div >= MAX_DIV); - if (test_bit(CLK_CPU_NEEDS_DEBUG_ALT_DIV, &cpuclk->flags)) { + if (cpuclk->flags & CLK_CPU_NEEDS_DEBUG_ALT_DIV) { /* * In Exynos4210, ATB clock parent is also mout_core. So * ATB clock also needs to be mantained at safe speed. @@ -203,7 +203,7 @@ static int exynos_cpuclk_pre_rate_change writel(div0, base + E4210_DIV_CPU0); wait_until_divider_stable(base + E4210_DIV_STAT_CPU0, DIV_MASK_ALL); - if (test_bit(CLK_CPU_HAS_DIV1, &cpuclk->flags)) { + if (cpuclk->flags & CLK_CPU_HAS_DIV1) { writel(div1, base + E4210_DIV_CPU1); wait_until_divider_stable(base + E4210_DIV_STAT_CPU1, DIV_MASK_ALL); @@ -222,7 +222,7 @@ static int exynos_cpuclk_post_rate_chang unsigned long mux_reg; /* find out the divider values to use for clock data */ - if (test_bit(CLK_CPU_NEEDS_DEBUG_ALT_DIV, &cpuclk->flags)) { + if (cpuclk->flags & CLK_CPU_NEEDS_DEBUG_ALT_DIV) { while ((cfg_data->prate * 1000) != ndata->new_rate) { if (cfg_data->prate == 0) return -EINVAL; @@ -237,7 +237,7 @@ static int exynos_cpuclk_post_rate_chang writel(mux_reg & ~(1 << 16), base + E4210_SRC_CPU); wait_until_mux_stable(base + E4210_STAT_CPU, 16, 1); - if (test_bit(CLK_CPU_NEEDS_DEBUG_ALT_DIV, &cpuclk->flags)) { + if (cpuclk->flags & CLK_CPU_NEEDS_DEBUG_ALT_DIV) { div |= (cfg_data->div0 & E4210_DIV0_ATB_MASK); div_mask |= E4210_DIV0_ATB_MASK; }