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Date: Mon, 14 Feb 2011 22:11:09 -0800 From: Arve Hjønnevåg <arve@...roid.com> To: linux-arm-kernel@...ts.infradead.org Cc: linux-omap@...r.kernel.org, Arve Hjønnevåg <arve@...roid.com>, Russell King <linux@....linux.org.uk>, Alexander Shishkin <virtuoso@...nd.org>, Jason Wessel <jason.wessel@...driver.com>, Greg Kroah-Hartman <gregkh@...e.de>, linux-kernel@...r.kernel.org Subject: [PATCH 1/8] ARM: etm: Don't require clock control If clk_get fail, assume the etb does not need a separate clock. Signed-off-by: Arve Hjønnevåg <arve@...roid.com> --- arch/arm/kernel/etm.c | 15 ++++++++------- 1 files changed, 8 insertions(+), 7 deletions(-) diff --git a/arch/arm/kernel/etm.c b/arch/arm/kernel/etm.c index 11db628..d4ec368 100644 --- a/arch/arm/kernel/etm.c +++ b/arch/arm/kernel/etm.c @@ -361,13 +361,12 @@ static int __init etb_probe(struct amba_device *dev, struct amba_id *id) if (ret) goto out_unmap; + /* Get optional clock. Currently used to select clock source on omap3 */ t->emu_clk = clk_get(&dev->dev, "emu_src_ck"); - if (IS_ERR(t->emu_clk)) { + if (IS_ERR(t->emu_clk)) dev_dbg(&dev->dev, "Failed to obtain emu_src_ck.\n"); - return -EFAULT; - } - - clk_enable(t->emu_clk); + else + clk_enable(t->emu_clk); etb_unlock(t); t->etb_bufsz = etb_readl(t, ETBR_DEPTH); @@ -402,8 +401,10 @@ static int etb_remove(struct amba_device *dev) iounmap(t->etb_regs); t->etb_regs = NULL; - clk_disable(t->emu_clk); - clk_put(t->emu_clk); + if (!IS_ERR(t->emu_clk)) { + clk_disable(t->emu_clk); + clk_put(t->emu_clk); + } amba_release_regions(dev); -- 1.7.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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