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authorEzequiel Garcia <ezequiel.garcia@free-electrons.com>2013-07-30 06:46:03 +0400
committerTejun Heo <tj@kernel.org>2013-07-30 17:03:01 +0400
commite0067f0b71a2b5d1c5d8df556830db253aa1b264 (patch)
treebb6b3b18aa10016e43183a6f5338adea2e47fb7e /drivers/ata/sata_mv.c
parent61b8c345aa8c50c6a99a90560a107d02124f0293 (diff)
downloadlinux-e0067f0b71a2b5d1c5d8df556830db253aa1b264.tar.xz
sata_mv: Remove unneeded CONFIG_HAVE_CLK ifdefs
If CONFIG_HAVE_CLK is not selected, then all the clk API turn out into no-ops. In other words, there's no need to have the ifdefs. The only side-effect of this patch is the extra tiny kmalloc, but that's not enough reason to have such ugly ifdefs all around the code. tj: Slightly massaged comment as per Andrew Lunn. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Acked-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/ata/sata_mv.c')
-rw-r--r--drivers/ata/sata_mv.c21
1 files changed, 7 insertions, 14 deletions
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 88e08515cf46..56be31819897 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -553,10 +553,15 @@ struct mv_host_priv {
u32 irq_mask_offset;
u32 unmask_all_irqs;
-#if defined(CONFIG_HAVE_CLK)
+ /*
+ * Needed on some devices that require their clocks to be enabled.
+ * These are optional: if the platform device does not have any
+ * clocks, they won't be used. Also, if the underlying hardware
+ * does not support the common clock framework (CONFIG_HAVE_CLK=n),
+ * all the clock operations become no-ops (see clk.h).
+ */
struct clk *clk;
struct clk **port_clks;
-#endif
/*
* These consistent DMA memory pools give us guaranteed
* alignment for hardware-accessed data structures,
@@ -4032,9 +4037,7 @@ static int mv_platform_probe(struct platform_device *pdev)
struct resource *res;
int n_ports = 0, irq = 0;
int rc;
-#if defined(CONFIG_HAVE_CLK)
int port;
-#endif
ata_print_version_once(&pdev->dev, DRV_VERSION);
@@ -4068,13 +4071,11 @@ static int mv_platform_probe(struct platform_device *pdev)
if (!host || !hpriv)
return -ENOMEM;
-#if defined(CONFIG_HAVE_CLK)
hpriv->port_clks = devm_kzalloc(&pdev->dev,
sizeof(struct clk *) * n_ports,
GFP_KERNEL);
if (!hpriv->port_clks)
return -ENOMEM;
-#endif
host->private_data = hpriv;
hpriv->n_ports = n_ports;
hpriv->board_idx = chip_soc;
@@ -4084,7 +4085,6 @@ static int mv_platform_probe(struct platform_device *pdev)
resource_size(res));
hpriv->base -= SATAHC0_REG_BASE;
-#if defined(CONFIG_HAVE_CLK)
hpriv->clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(hpriv->clk))
dev_notice(&pdev->dev, "cannot get optional clkdev\n");
@@ -4098,7 +4098,6 @@ static int mv_platform_probe(struct platform_device *pdev)
if (!IS_ERR(hpriv->port_clks[port]))
clk_prepare_enable(hpriv->port_clks[port]);
}
-#endif
/*
* (Re-)program MBUS remapping windows if we are asked to.
@@ -4124,7 +4123,6 @@ static int mv_platform_probe(struct platform_device *pdev)
return 0;
err:
-#if defined(CONFIG_HAVE_CLK)
if (!IS_ERR(hpriv->clk)) {
clk_disable_unprepare(hpriv->clk);
clk_put(hpriv->clk);
@@ -4135,7 +4133,6 @@ err:
clk_put(hpriv->port_clks[port]);
}
}
-#endif
return rc;
}
@@ -4151,13 +4148,10 @@ err:
static int mv_platform_remove(struct platform_device *pdev)
{
struct ata_host *host = platform_get_drvdata(pdev);
-#if defined(CONFIG_HAVE_CLK)
struct mv_host_priv *hpriv = host->private_data;
int port;
-#endif
ata_host_detach(host);
-#if defined(CONFIG_HAVE_CLK)
if (!IS_ERR(hpriv->clk)) {
clk_disable_unprepare(hpriv->clk);
clk_put(hpriv->clk);
@@ -4168,7 +4162,6 @@ static int mv_platform_remove(struct platform_device *pdev)
clk_put(hpriv->port_clks[port]);
}
}
-#endif
return 0;
}