Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751321AbdL3BNr (ORCPT ); Fri, 29 Dec 2017 20:13:47 -0500 Received: from mail-wm0-f67.google.com ([74.125.82.67]:45541 "EHLO mail-wm0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751299AbdL3BNo (ORCPT ); Fri, 29 Dec 2017 20:13:44 -0500 X-Google-Smtp-Source: ACJfBouVBk5O8n/Tlbfqwcm/GAZEIem6wyycGEG2SDJIe+kpXXMZP8kcvjqima4hzTesMdN/GERN6w== From: "Bryan O'Donoghue" To: mturquette@baylibre.com, sboyd@codeaurora.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org Cc: pure.logic@nexus-software.ie, Vladimir Zapolskiy , Sylvain Lemieux , Gabriel Fernandez , linux-arm-kernel@lists.infradead.org Subject: [PATCH 32/33] clk: lpc32xx: change round_rate() return logic Date: Sat, 30 Dec 2017 01:13:11 +0000 Message-Id: <1514596392-22270-33-git-send-email-pure.logic@nexus-software.ie> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1514596392-22270-1-git-send-email-pure.logic@nexus-software.ie> References: <1514596392-22270-1-git-send-email-pure.logic@nexus-software.ie> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1806 Lines: 57 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 | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/clk/nxp/clk-lpc32xx.c b/drivers/clk/nxp/clk-lpc32xx.c index 76c17f4..0e0d258 100644 --- a/drivers/clk/nxp/clk-lpc32xx.c +++ b/drivers/clk/nxp/clk-lpc32xx.c @@ -664,17 +664,17 @@ static unsigned long clk_usb_pll_round_rate(struct clk_hw *hw, * USB divider, USB PLL N and M parameters. */ if (rate != 48000000) - return -EINVAL; + return 0; /* USB divider clock */ usb_div_hw = clk_hw_get_parent_by_index(hw, 0); if (!usb_div_hw) - return -EINVAL; + return 0; /* Main oscillator clock */ osc_hw = clk_hw_get_parent_by_index(usb_div_hw, 0); if (!osc_hw) - return -EINVAL; + return 0; o = clk_hw_get_rate(osc_hw); /* must be in range 1..20 MHz */ /* Check if valid USB divider and USB PLL parameters exists */ @@ -697,7 +697,7 @@ static unsigned long clk_usb_pll_round_rate(struct clk_hw *hw, } } - return -EINVAL; + return 0; } #define LPC32XX_DEFINE_PLL_OPS(_name, _rc, _sr, _rr) \ -- 2.7.4