diff options
author | Arve Hjønnevåg <arve@android.com> | 2011-01-28 23:12:32 -0800 |
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committer | Arve Hjønnevåg <arve@android.com> | 2013-04-29 14:42:36 -0700 |
commit | 97934e51a6e29e1928efa4f2762d17dc09f5b151 (patch) | |
tree | 2c7bfe3da48fe82a0ffec592692a5a9439375ee2 /arch/arm | |
parent | d1b43bc32a09cdde193466ab096c4e1a06beb699 (diff) |
ARM: etm: Don't require clock control
If clk_get fail, assume the etb does not need a separate clock.
Change-Id: Ia0bf3f5391e94a60ea45876aa7afc8a88a7ec3bf
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Diffstat (limited to 'arch/arm')
-rw-r--r-- | 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 9b6de8c988f..c6277bfeb4b 100644 --- a/arch/arm/kernel/etm.c +++ b/arch/arm/kernel/etm.c @@ -362,13 +362,12 @@ static int etb_probe(struct amba_device *dev, const 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); @@ -403,8 +402,10 @@ 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); |