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[212.204.172.199]) by smtp.gmail.com with ESMTPSA id r8sm29086992edm.22.2018.01.01.11.35.07 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 01 Jan 2018 11:35:07 -0800 (PST) From: Bryan O'Donoghue To: mturquette@baylibre.com, sboyd@codeaurora.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org Cc: Bryan O'Donoghue , Vladimir Zapolskiy , Sylvain Lemieux , Gabriel Fernandez , linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 21/34] clk: lpc32xx: change clk_hclk_pll_round_rate() return logic Date: Mon, 1 Jan 2018 19:34:47 +0000 Message-Id: <1514835300-381-7-git-send-email-pure.logic@nexus-software.ie> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1514835300-381-1-git-send-email-pure.logic@nexus-software.ie> References: <1514835300-381-1-git-send-email-pure.logic@nexus-software.ie> Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch updates the round_rate() logic here to return zero instead of a negative number on error. In conjunction with higher-level changes associated with acting on the return value of clk_ops->round_rate() it is then possible to have clk_ops->round_rate() return values from 1 Hz to ULONG_MAX Hz instead of the current limitation of 1 Hz to LONG_MAX Hz. Signed-off-by: Bryan O'Donoghue Cc: Michael Turquette Cc: Stephen Boyd Cc: Vladimir Zapolskiy Cc: Sylvain Lemieux Cc: Gabriel Fernandez Cc: linux-clk@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/clk/nxp/clk-lpc32xx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/clk/nxp/clk-lpc32xx.c b/drivers/clk/nxp/clk-lpc32xx.c index 81ab57d..76c17f4 100644 --- a/drivers/clk/nxp/clk-lpc32xx.c +++ b/drivers/clk/nxp/clk-lpc32xx.c @@ -595,7 +595,7 @@ static unsigned long clk_hclk_pll_round_rate(struct clk_hw *hw, pr_debug("%s: %lu/%lu\n", clk_hw_get_name(hw), *parent_rate, rate); if (rate > 266500000) - return -EINVAL; + return 0; /* Have to check all 20 possibilities to find the minimal M */ for (p_i = 4; p_i >= 0; p_i--) { @@ -622,7 +622,7 @@ static unsigned long clk_hclk_pll_round_rate(struct clk_hw *hw, if (d == (u64)rate << 6) { pr_err("%s: %lu: no valid PLL parameters are found\n", clk_hw_get_name(hw), rate); - return -EINVAL; + return 0; } clk->m_div = m;