We catch errors in the base clock registration, failure to ioremap and failures in the final of_clk_add_provider() call. Also we unmap the registers when we need to rollback.
Signed-off-by: Andre Przywara <[email protected]> --- drivers/clk/sunxi/clk-sunxi.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c index 4bd0917..91de0a0 100644 --- a/drivers/clk/sunxi/clk-sunxi.c +++ b/drivers/clk/sunxi/clk-sunxi.c @@ -985,13 +985,20 @@ static struct clk ** __init sunxi_divs_clk_setup(struct device_node *node, /* Set up factor clock that we will be dividing */ pclk = sunxi_factors_clk_setup(node, data->factors); + if (!pclk) + return NULL; parent = __clk_get_name(pclk); reg = of_iomap(node, 0); + if (!reg) { + pr_err("Could not map registers for divs-clk: %s\n", + of_node_full_name(node)); + return NULL; + } clk_data = kmalloc(sizeof(struct clk_onecell_data), GFP_KERNEL); if (!clk_data) - return NULL; + goto out_unmap; clks = kcalloc(ndivs, sizeof(*clks), GFP_KERNEL); if (!clks) @@ -1074,16 +1081,21 @@ static struct clk ** __init sunxi_divs_clk_setup(struct device_node *node, /* Adjust to the real max */ clk_data->clk_num = i; - of_clk_add_provider(node, of_clk_src_onecell_get, clk_data); + if (of_clk_add_provider(node, of_clk_src_onecell_get, clk_data)) { + pr_err("%s: failed to add clock provider for %s\n", + __func__, clk_name); + goto free_gate; + } return clks; - free_gate: kfree(gate); free_clks: kfree(clks); free_clkdata: kfree(clk_data); +out_unmap: + iounmap(reg); return NULL; } -- 2.6.4 -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
