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authorStephen Boyd <sboyd@codeaurora.org>2016-02-09 04:45:28 +0300
committerLee Jones <lee.jones@linaro.org>2016-02-11 14:03:07 +0300
commitc4726abce63bf9b1887ce68fdf012a823bd94ec3 (patch)
tree2cb7f9921a87f4e1b346e57c1787ba3795e0e8f2 /drivers/mfd
parent36f90b0a2ddd60823fe193a85e60ff1906c2a9b3 (diff)
downloadlinux-c4726abce63bf9b1887ce68fdf012a823bd94ec3.tar.xz
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 <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>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/intel_quark_i2c_gpio.c26
1 files 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)