From mboxrd@z Thu Jan 1 00:00:00 1970 From: shawn.guo@linaro.org (Shawn Guo) Date: Mon, 18 Mar 2013 16:26:22 +0800 Subject: [PATCH v2 1/4] net: fec: handle optional clk_ptp more gracefully In-Reply-To: <1363595185-12302-1-git-send-email-shawn.guo@linaro.org> References: <1363595185-12302-1-git-send-email-shawn.guo@linaro.org> Message-ID: <1363595185-12302-2-git-send-email-shawn.guo@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org When the optional clk_ptp is absent, we can just set it to NULL, and clk API will just handle it gracefully. It saves us from checking clk_ptp whenever calling into clk API. Also since clk_ptp is optional, the "ret" variable shouldn't be set in case that the clock is absent. Signed-off-by: Shawn Guo --- drivers/net/ethernet/freescale/fec.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c index fccc3bf..d2a9851 100644 --- a/drivers/net/ethernet/freescale/fec.c +++ b/drivers/net/ethernet/freescale/fec.c @@ -1804,14 +1804,13 @@ fec_probe(struct platform_device *pdev) fep->bufdesc_ex = pdev->id_entry->driver_data & FEC_QUIRK_HAS_BUFDESC_EX; if (IS_ERR(fep->clk_ptp)) { - ret = PTR_ERR(fep->clk_ptp); + fep->clk_ptp = NULL; fep->bufdesc_ex = 0; } clk_prepare_enable(fep->clk_ahb); clk_prepare_enable(fep->clk_ipg); - if (!IS_ERR(fep->clk_ptp)) - clk_prepare_enable(fep->clk_ptp); + clk_prepare_enable(fep->clk_ptp); reg_phy = devm_regulator_get(&pdev->dev, "phy"); if (!IS_ERR(reg_phy)) { @@ -1876,8 +1875,7 @@ failed_irq: failed_regulator: clk_disable_unprepare(fep->clk_ahb); clk_disable_unprepare(fep->clk_ipg); - if (!IS_ERR(fep->clk_ptp)) - clk_disable_unprepare(fep->clk_ptp); + clk_disable_unprepare(fep->clk_ptp); failed_pin: failed_clk: iounmap(fep->hwp); -- 1.7.9.5