diff options
Diffstat (limited to 'drivers/ata/sata_mv.c')
| -rw-r--r-- | drivers/ata/sata_mv.c | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c index 88e0851..56be3181 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; } |
