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mfd: intel_quark_i2c_gpio: Use clkdev_create()

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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 <andriy.shevchenko@linux.intel.com>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Stephen Boyd 2016-02-08 17:45:28 -08:00 committed by Lee Jones
parent 36f90b0a2d
commit c4726abce6
1 changed files with 9 additions and 17 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

26
drivers/mfd/intel_quark_i2c_gpio.c
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@ -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)