This prevents potential division by zero errors if GPMC fck turns out to be zero due to faulty clock data.
Use resource managed clk_get() API. Signed-off-by: Roger Quadros <[email protected]> Signed-off-by: Sekhar Nori <[email protected]> --- arch/arm/mach-omap2/gpmc.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c index 437fb6f..104bc2c 100644 --- a/arch/arm/mach-omap2/gpmc.c +++ b/arch/arm/mach-omap2/gpmc.c @@ -204,11 +204,6 @@ static unsigned long gpmc_get_fclk_period(void) { unsigned long rate = clk_get_rate(gpmc_l3_clk); - if (rate == 0) { - printk(KERN_WARNING "gpmc_l3_clk not enabled\n"); - return 0; - } - rate /= 1000; rate = 1000000000 / rate; /* In picoseconds */ @@ -1692,13 +1687,18 @@ static int gpmc_probe(struct platform_device *pdev) else gpmc_irq = res->start; - gpmc_l3_clk = clk_get(&pdev->dev, "fck"); + gpmc_l3_clk = devm_clk_get(&pdev->dev, "fck"); if (IS_ERR(gpmc_l3_clk)) { - dev_err(&pdev->dev, "error: clk_get\n"); + dev_err(&pdev->dev, "Failed to get GPMC fck\n"); gpmc_irq = 0; return PTR_ERR(gpmc_l3_clk); } + if (!clk_get_rate(gpmc_l3_clk)) { + dev_err(&pdev->dev, "Invalid GPMC fck clock rate\n"); + return -EINVAL; + } + pm_runtime_enable(&pdev->dev); pm_runtime_get_sync(&pdev->dev); @@ -1741,7 +1741,6 @@ static int gpmc_probe(struct platform_device *pdev) rc = gpmc_probe_dt(pdev); if (rc < 0) { pm_runtime_put_sync(&pdev->dev); - clk_put(gpmc_l3_clk); dev_err(gpmc_dev, "failed to probe DT parameters\n"); return rc; } -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
