From c4726abce63bf9b1887ce68fdf012a823bd94ec3 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Mon, 8 Feb 2016 17:45:28 -0800 Subject: [PATCH] mfd: intel_quark_i2c_gpio: Use clkdev_create() Convert this driver to use clkdev_create() instead of clk_register_clkdevs(). The latter API is only used by this driver, although this driver only allocates one clk to add anyway. Furthermore, this driver allocates the clk_lookup structure with devm, but clkdev_drop() will free that structure when passed, leading to a double free when this driver is removed. Clean it all up and pave the way for the removal of clk_register_clkdevs(). Cc: Andy Shevchenko Cc: Russell King Signed-off-by: Stephen Boyd Signed-off-by: Lee Jones --- drivers/mfd/intel_quark_i2c_gpio.c | 26 +++++++++----------------- 1 file changed, 9 insertions(+), 17 deletions(-) diff --git a/drivers/mfd/intel_quark_i2c_gpio.c b/drivers/mfd/intel_quark_i2c_gpio.c index 042137465300..bdc5e27222c0 100644 --- a/drivers/mfd/intel_quark_i2c_gpio.c +++ b/drivers/mfd/intel_quark_i2c_gpio.c @@ -52,8 +52,6 @@ /* The Quark I2C controller source clock */ #define INTEL_QUARK_I2C_CLK_HZ 33000000 -#define INTEL_QUARK_I2C_NCLK 1 - struct intel_quark_mfd { struct pci_dev *pdev; struct clk *i2c_clk; @@ -128,30 +126,24 @@ MODULE_DEVICE_TABLE(pci, intel_quark_mfd_ids); static int intel_quark_register_i2c_clk(struct intel_quark_mfd *quark_mfd) { struct pci_dev *pdev = quark_mfd->pdev; - struct clk_lookup *i2c_clk_lookup; struct clk *i2c_clk; - int ret; - - i2c_clk_lookup = devm_kcalloc(&pdev->dev, INTEL_QUARK_I2C_NCLK, - sizeof(*i2c_clk_lookup), GFP_KERNEL); - if (!i2c_clk_lookup) - return -ENOMEM; - - i2c_clk_lookup[0].dev_id = INTEL_QUARK_I2C_CONTROLLER_CLK; i2c_clk = clk_register_fixed_rate(&pdev->dev, INTEL_QUARK_I2C_CONTROLLER_CLK, NULL, CLK_IS_ROOT, INTEL_QUARK_I2C_CLK_HZ); + if (IS_ERR(i2c_clk)) + return PTR_ERR(i2c_clk); - quark_mfd->i2c_clk_lookup = i2c_clk_lookup; quark_mfd->i2c_clk = i2c_clk; + quark_mfd->i2c_clk_lookup = clkdev_create(i2c_clk, NULL, + INTEL_QUARK_I2C_CONTROLLER_CLK); - ret = clk_register_clkdevs(i2c_clk, i2c_clk_lookup, - INTEL_QUARK_I2C_NCLK); - if (ret) - dev_err(&pdev->dev, "Fixed clk register failed: %d\n", ret); + if (!quark_mfd->i2c_clk_lookup) { + dev_err(&pdev->dev, "Fixed clk register failed\n"); + return -ENOMEM; + } - return ret; + return 0; } static void intel_quark_unregister_i2c_clk(struct pci_dev *pdev) -- 2.20.1