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i2c: Remove unneeded xxx_set_drvdata(..., NULL) calls

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There is simply no reason to be manually setting the private driver
data to NULL in the remove/fail to probe cases.  This is just extra
cruft code that can be removed.

A few notes:
* Nothing relies on drvdata being set to NULL.
* The __device_release_driver() function eventually calls
  dev_set_drvdata(dev, NULL) anyway, so there's no need to do it
  twice.
* I verified that there were no cases where xxx_get_drvdata() was
  being called in these drivers and checking for / relying on the NULL
  return value.

This could be cleaned up kernel-wide but for now just take the baby
step and remove from the i2c subsystem.

Reported-by: Wolfram Sang <wsa@the-dreams.de>
Reported-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Wolfram Sang <wolfram@the-dreams.de>
This commit is contained in:
Doug Anderson 2013-02-15 13:18:35 +00:00 committed by Wolfram Sang
parent 0a6d224679
commit 55827f4aa6
35 changed files with 1 additions and 64 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/i2c/busses/i2c-au1550.c
View File

@ -376,7 +376,6 @@ static int i2c_au1550_remove(struct platform_device *pdev)
{
struct i2c_au1550_data *priv = platform_get_drvdata(pdev);
platform_set_drvdata(pdev, NULL);
i2c_del_adapter(&priv->adap);
i2c_au1550_disable(priv);
iounmap(priv->psc_base);

2
drivers/i2c/busses/i2c-bfin-twi.c
View File

@ -724,8 +724,6 @@ static int i2c_bfin_twi_remove(struct platform_device *pdev)
{
struct bfin_twi_iface *iface = platform_get_drvdata(pdev);
platform_set_drvdata(pdev, NULL);
i2c_del_adapter(&(iface->adap));
free_irq(iface->irq, iface);
peripheral_free_list((unsigned short *)pdev->dev.platform_data);

2
drivers/i2c/busses/i2c-cpm.c
View File

@ -682,7 +682,6 @@ static int cpm_i2c_probe(struct platform_device *ofdev)
out_shut:
cpm_i2c_shutdown(cpm);
out_free:
dev_set_drvdata(&ofdev->dev, NULL);
kfree(cpm);
return result;
@ -696,7 +695,6 @@ static int cpm_i2c_remove(struct platform_device *ofdev)
cpm_i2c_shutdown(cpm);
dev_set_drvdata(&ofdev->dev, NULL);
kfree(cpm);
return 0;

2
drivers/i2c/busses/i2c-davinci.c
View File

@ -755,7 +755,6 @@ err_mem_ioremap:
clk_put(dev->clk);
dev->clk = NULL;
err_free_mem:
platform_set_drvdata(pdev, NULL);
put_device(&pdev->dev);
kfree(dev);
err_release_region:
@ -771,7 +770,6 @@ static int davinci_i2c_remove(struct platform_device *pdev)
i2c_davinci_cpufreq_deregister(dev);
platform_set_drvdata(pdev, NULL);
i2c_del_adapter(&dev->adapter);
put_device(&pdev->dev);

2
drivers/i2c/busses/i2c-designware-pcidrv.c
View File

@ -319,7 +319,6 @@ err_free_irq:
free_irq(pdev->irq, dev);
err_iounmap:
iounmap(dev->base);
pci_set_drvdata(pdev, NULL);
put_device(&pdev->dev);
kfree(dev);
err_release_region:
@ -336,7 +335,6 @@ static void i2c_dw_pci_remove(struct pci_dev *pdev)
pm_runtime_forbid(&pdev->dev);
pm_runtime_get_noresume(&pdev->dev);
pci_set_drvdata(pdev, NULL);
i2c_del_adapter(&dev->adapter);
put_device(&pdev->dev);

2
drivers/i2c/busses/i2c-designware-platdrv.c
View File

@ -207,7 +207,6 @@ err_unuse_clocks:
clk_put(dev->clk);
dev->clk = NULL;
err_free_mem:
platform_set_drvdata(pdev, NULL);
put_device(&pdev->dev);
kfree(dev);
err_release_region:
@ -221,7 +220,6 @@ static int dw_i2c_remove(struct platform_device *pdev)
struct dw_i2c_dev *dev = platform_get_drvdata(pdev);
struct resource *mem;
platform_set_drvdata(pdev, NULL);
pm_runtime_get_sync(&pdev->dev);
i2c_del_adapter(&dev->adapter);

2
drivers/i2c/busses/i2c-eg20t.c
View File

@ -869,8 +869,6 @@ static void pch_i2c_remove(struct pci_dev *pdev)
for (i = 0; i < adap_info->ch_num; i++)
adap_info->pch_data[i].pch_base_address = NULL;
pci_set_drvdata(pdev, NULL);
pci_release_regions(pdev);
pci_disable_device(pdev);

4
drivers/i2c/busses/i2c-highlander.c
View File

@ -436,8 +436,6 @@ err_unmap:
err:
kfree(dev);
platform_set_drvdata(pdev, NULL);
return ret;
}
@ -453,8 +451,6 @@ static int highlander_i2c_remove(struct platform_device *pdev)
iounmap(dev->base);
kfree(dev);
platform_set_drvdata(pdev, NULL);
return 0;
}

1
drivers/i2c/busses/i2c-i801.c
View File

@ -1254,7 +1254,6 @@ static void i801_remove(struct pci_dev *dev)
free_irq(dev->irq, priv);
pci_release_region(dev, SMBBAR);
pci_set_drvdata(dev, NULL);
kfree(priv);
/*
* do not call pci_disable_device(dev) since it can cause hard hangs on

3
drivers/i2c/busses/i2c-ibm_iic.c
View File

@ -773,7 +773,6 @@ error_cleanup:
if (dev->vaddr)
iounmap(dev->vaddr);
dev_set_drvdata(&ofdev->dev, NULL);
kfree(dev);
return ret;
}
@ -785,8 +784,6 @@ static int iic_remove(struct platform_device *ofdev)
{
struct ibm_iic_private *dev = dev_get_drvdata(&ofdev->dev);
dev_set_drvdata(&ofdev->dev, NULL);
i2c_del_adapter(&dev->adap);
if (dev->irq) {

1
drivers/i2c/busses/i2c-imx.c
View File

@ -605,7 +605,6 @@ static int __exit i2c_imx_remove(struct platform_device *pdev)
/* remove adapter */
dev_dbg(&i2c_imx->adapter.dev, "adapter removed\n");
i2c_del_adapter(&i2c_imx->adapter);
platform_set_drvdata(pdev, NULL);
/* setup chip registers to defaults */
writeb(0, i2c_imx->base + IMX_I2C_IADR);

2
drivers/i2c/busses/i2c-intel-mid.c
View File

@ -1069,7 +1069,6 @@ static int intel_mid_i2c_probe(struct pci_dev *dev,
fail3:
free_irq(dev->irq, mrst);
fail2:
pci_set_drvdata(dev, NULL);
kfree(mrst);
fail1:
iounmap(base);
@ -1087,7 +1086,6 @@ static void intel_mid_i2c_remove(struct pci_dev *dev)
dev_err(&dev->dev, "Failed to delete i2c adapter");
free_irq(dev->irq, mrst);
pci_set_drvdata(dev, NULL);
iounmap(mrst->base);
kfree(mrst);
pci_release_region(dev, 0);

2
drivers/i2c/busses/i2c-iop3xx.c
View File

@ -415,8 +415,6 @@ iop3xx_i2c_remove(struct platform_device *pdev)
kfree(adapter_data);
kfree(padapter);
platform_set_drvdata(pdev, NULL);
return 0;
}

2
drivers/i2c/busses/i2c-mpc.c
View File

@ -696,7 +696,6 @@ static int fsl_i2c_probe(struct platform_device *op)
return result;
fail_add:
dev_set_drvdata(&op->dev, NULL);
free_irq(i2c->irq, i2c);
fail_request:
irq_dispose_mapping(i2c->irq);
@ -711,7 +710,6 @@ static int fsl_i2c_remove(struct platform_device *op)
struct mpc_i2c *i2c = dev_get_drvdata(&op->dev);
i2c_del_adapter(&i2c->adap);
dev_set_drvdata(&op->dev, NULL);
if (i2c->irq)
free_irq(i2c->irq, i2c);

2
drivers/i2c/busses/i2c-mxs.c
View File

@ -697,8 +697,6 @@ static int mxs_i2c_remove(struct platform_device *pdev)
writel(MXS_I2C_CTRL0_SFTRST, i2c->regs + MXS_I2C_CTRL0_SET);
platform_set_drvdata(pdev, NULL);
return 0;
}

2
drivers/i2c/busses/i2c-nomadik.c
View File

@ -1105,7 +1105,6 @@ static int nmk_i2c_probe(struct amba_device *adev, const struct amba_id *id)
err_irq:
iounmap(dev->virtbase);
err_no_ioremap:
amba_set_drvdata(adev, NULL);
kfree(dev);
err_pinctrl:
err_no_mem:
@ -1130,7 +1129,6 @@ static int nmk_i2c_remove(struct amba_device *adev)
release_mem_region(res->start, resource_size(res));
clk_put(dev->clk);
pm_runtime_disable(&adev->dev);
amba_set_drvdata(adev, NULL);
kfree(dev);
return 0;

1
drivers/i2c/busses/i2c-ocores.c
View File

@ -451,7 +451,6 @@ static int ocores_i2c_remove(struct platform_device *pdev)
/* remove adapter & data */
i2c_del_adapter(&i2c->adap);
platform_set_drvdata(pdev, NULL);
return 0;
}

5
drivers/i2c/busses/i2c-octeon.c
View File

@ -595,7 +595,7 @@ static int octeon_i2c_probe(struct platform_device *pdev)
result = i2c_add_adapter(&i2c->adap);
if (result < 0) {
dev_err(i2c->dev, "failed to add adapter\n");
goto fail_add;
goto out;
}
dev_info(i2c->dev, "version %s\n", DRV_VERSION);
@ -603,8 +603,6 @@ static int octeon_i2c_probe(struct platform_device *pdev)
return 0;
fail_add:
platform_set_drvdata(pdev, NULL);
out:
return result;
};
@ -614,7 +612,6 @@ static int octeon_i2c_remove(struct platform_device *pdev)
struct octeon_i2c *i2c = platform_get_drvdata(pdev);
i2c_del_adapter(&i2c->adap);
platform_set_drvdata(pdev, NULL);
return 0;
};

3
drivers/i2c/busses/i2c-omap.c
View File

@ -1262,7 +1262,6 @@ err_unuse_clocks:
pm_runtime_put(dev->dev);
pm_runtime_disable(&pdev->dev);
err_free_mem:
platform_set_drvdata(pdev, NULL);
return r;
}
@ -1272,8 +1271,6 @@ static int omap_i2c_remove(struct platform_device *pdev)
struct omap_i2c_dev *dev = platform_get_drvdata(pdev);
int ret;
platform_set_drvdata(pdev, NULL);
i2c_del_adapter(&dev->adapter);
ret = pm_runtime_get_sync(&pdev->dev);
if (IS_ERR_VALUE(ret))

1
drivers/i2c/busses/i2c-pca-platform.c
View File

@ -260,7 +260,6 @@ e_print:
static int i2c_pca_pf_remove(struct platform_device *pdev)
{
struct i2c_pca_pf_data *i2c = platform_get_drvdata(pdev);
platform_set_drvdata(pdev, NULL);
i2c_del_adapter(&i2c->adap);

2
drivers/i2c/busses/i2c-pmcmsp.c
View File

@ -349,7 +349,6 @@ static int pmcmsptwi_probe(struct platform_device *pldev)
return 0;
ret_unmap:
platform_set_drvdata(pldev, NULL);
if (pmcmsptwi_data.irq) {
pmcmsptwi_writel(0,
pmcmsptwi_data.iobase + MSP_TWI_INT_MSK_REG_OFFSET);
@ -374,7 +373,6 @@ static int pmcmsptwi_remove(struct platform_device *pldev)
i2c_del_adapter(&pmcmsptwi_adapter);
platform_set_drvdata(pldev, NULL);
if (pmcmsptwi_data.irq) {
pmcmsptwi_writel(0,
pmcmsptwi_data.iobase + MSP_TWI_INT_MSK_REG_OFFSET);

2
drivers/i2c/busses/i2c-pnx.c
View File

@ -761,7 +761,6 @@ out_clkget:
out_drvdata:
kfree(alg_data);
err_kzalloc:
platform_set_drvdata(pdev, NULL);
return ret;
}
@ -776,7 +775,6 @@ static int i2c_pnx_remove(struct platform_device *pdev)
release_mem_region(alg_data->base, I2C_PNX_REGION_SIZE);
clk_put(alg_data->clk);
kfree(alg_data);
platform_set_drvdata(pdev, NULL);
return 0;
}

1
drivers/i2c/busses/i2c-powermac.c
View File

@ -221,7 +221,6 @@ static int i2c_powermac_remove(struct platform_device *dev)
printk(KERN_WARNING
"i2c-powermac.c: Failed to remove bus %s !\n",
adapter->name);
platform_set_drvdata(dev, NULL);
memset(adapter, 0, sizeof(*adapter));
return 0;

2
drivers/i2c/busses/i2c-puv3.c
View File

@ -223,7 +223,6 @@ static int puv3_i2c_probe(struct platform_device *pdev)
return 0;
fail_add_adapter:
platform_set_drvdata(pdev, NULL);
kfree(adapter);
fail_nomem:
release_mem_region(mem->start, resource_size(mem));
@ -245,7 +244,6 @@ static int puv3_i2c_remove(struct platform_device *pdev)
}
put_device(&pdev->dev);
platform_set_drvdata(pdev, NULL);
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(mem->start, resource_size(mem));

2
drivers/i2c/busses/i2c-pxa-pci.c
View File

@ -128,7 +128,6 @@ static int ce4100_i2c_probe(struct pci_dev *dev,
return 0;
err_dev_add:
pci_set_drvdata(dev, NULL);
kfree(sds);
err_mem:
pci_disable_device(dev);
@ -141,7 +140,6 @@ static void ce4100_i2c_remove(struct pci_dev *dev)
unsigned int i;
sds = pci_get_drvdata(dev);
pci_set_drvdata(dev, NULL);
for (i = 0; i < ARRAY_SIZE(sds->pdev); i++)
platform_device_unregister(sds->pdev[i]);

2
drivers/i2c/busses/i2c-pxa.c
View File

@ -1219,8 +1219,6 @@ static int i2c_pxa_remove(struct platform_device *dev)
{
struct pxa_i2c *i2c = platform_get_drvdata(dev);
platform_set_drvdata(dev, NULL);
i2c_del_adapter(&i2c->adap);
if (!i2c->use_pio)
free_irq(i2c->irq, i2c);

1
drivers/i2c/busses/i2c-s6000.c
View File

@ -365,7 +365,6 @@ static int s6i2c_remove(struct platform_device *pdev)
{
struct s6i2c_if *iface = platform_get_drvdata(pdev);
i2c_wr16(iface, S6_I2C_ENABLE, 0);
platform_set_drvdata(pdev, NULL);
i2c_del_adapter(&iface->adap);
free_irq(iface->irq, iface);
clk_disable(iface->clk);

1
drivers/i2c/busses/i2c-sh7760.c
View File

@ -546,7 +546,6 @@ static int sh7760_i2c_remove(struct platform_device *pdev)
release_resource(id->ioarea);
kfree(id->ioarea);
kfree(id);
platform_set_drvdata(pdev, NULL);
return 0;
}

1
drivers/i2c/busses/i2c-stu300.c
View File

@ -975,7 +975,6 @@ stu300_remove(struct platform_device *pdev)
i2c_del_adapter(&dev->adapter);
/* Turn off everything */
stu300_wr8(0x00, dev->virtbase + I2C_CR);
platform_set_drvdata(pdev, NULL);
return 0;
}

2
drivers/i2c/busses/i2c-taos-evm.c
View File

@ -271,7 +271,6 @@ static int taos_connect(struct serio *serio, struct serio_driver *drv)
exit_close:
serio_close(serio);
exit_kfree:
serio_set_drvdata(serio, NULL);
kfree(taos);
exit:
return err;
@ -285,7 +284,6 @@ static void taos_disconnect(struct serio *serio)
i2c_unregister_device(taos->client);
i2c_del_adapter(&taos->adapter);
serio_close(serio);
serio_set_drvdata(serio, NULL);
kfree(taos);
dev_info(&serio->dev, "Disconnected from TAOS EVM\n");

2
drivers/i2c/busses/i2c-versatile.c
View File

@ -125,8 +125,6 @@ static int i2c_versatile_remove(struct platform_device *dev)
{
struct i2c_versatile *i2c = platform_get_drvdata(dev);
platform_set_drvdata(dev, NULL);
i2c_del_adapter(&i2c->adap);
return 0;
}

2
drivers/i2c/busses/i2c-xiic.c
View File

@ -784,8 +784,6 @@ static int xiic_i2c_remove(struct platform_device *pdev)
xiic_deinit(i2c);
platform_set_drvdata(pdev, NULL);
free_irq(platform_get_irq(pdev, 0), i2c);
iounmap(i2c->base);

1
drivers/i2c/busses/i2c-xlr.c
View File

@ -257,7 +257,6 @@ static int xlr_i2c_remove(struct platform_device *pdev)
priv = platform_get_drvdata(pdev);
i2c_del_adapter(&priv->adap);
platform_set_drvdata(pdev, NULL);
return 0;
}

1
drivers/i2c/busses/scx200_acb.c
View File

@ -542,7 +542,6 @@ static int scx200_remove(struct platform_device *pdev)
struct scx200_acb_iface *iface;
iface = platform_get_drvdata(pdev);
platform_set_drvdata(pdev, NULL);
scx200_cleanup_iface(iface);
return 0;

1
drivers/i2c/muxes/i2c-mux-gpio.c
View File

@ -250,7 +250,6 @@ static int i2c_mux_gpio_remove(struct platform_device *pdev)
for (i = 0; i < mux->data.n_gpios; i++)
gpio_free(mux->gpio_base + mux->data.gpios[i]);
platform_set_drvdata(pdev, NULL);
i2c_put_adapter(mux->parent);
return 0;