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

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>

35 files changed, 1 insertions, 64 deletions

diff --git a/drivers/i2c/busses/i2c-au1550.c b/drivers/i2c/busses/i2c-au1550.c
index b278298787d7..b5b89239d622 100644
--- a/drivers/i2c/busses/i2c-au1550.c
+++ b/drivers/i2c/busses/i2c-au1550.c
@@ -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);
diff --git a/drivers/i2c/busses/i2c-bfin-twi.c b/drivers/i2c/busses/i2c-bfin-twi.c
index 0cf780fd6ef1..05080c449c6b 100644
--- a/drivers/i2c/busses/i2c-bfin-twi.c
+++ b/drivers/i2c/busses/i2c-bfin-twi.c
@@ -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);
diff --git a/drivers/i2c/busses/i2c-cpm.c b/drivers/i2c/busses/i2c-cpm.c
index 2e79c1024191..3823623baa48 100644
--- a/drivers/i2c/busses/i2c-cpm.c
+++ b/drivers/i2c/busses/i2c-cpm.c
@@ -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;
diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c
index 6a0a55319449..7d1e590a7bb6 100644
--- a/drivers/i2c/busses/i2c-davinci.c
+++ b/drivers/i2c/busses/i2c-davinci.c
@@ -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);
 
diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c
index 6add851e9dee..7c5e383c350d 100644
--- a/drivers/i2c/busses/i2c-designware-pcidrv.c
+++ b/drivers/i2c/busses/i2c-designware-pcidrv.c
@@ -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);
 
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index d2a33e93f8ab..0ceb6e1b0f65 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -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);
diff --git a/drivers/i2c/busses/i2c-eg20t.c b/drivers/i2c/busses/i2c-eg20t.c
index 5e7886e7136e..0f3752967c4b 100644
--- a/drivers/i2c/busses/i2c-eg20t.c
+++ b/drivers/i2c/busses/i2c-eg20t.c
@@ -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);
diff --git a/drivers/i2c/busses/i2c-highlander.c b/drivers/i2c/busses/i2c-highlander.c
index 3351cc7ed11f..436b0f254916 100644
--- a/drivers/i2c/busses/i2c-highlander.c
+++ b/drivers/i2c/busses/i2c-highlander.c
@@ -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;
 }
 
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 76febfb09760..e1cf2e0e1f23 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -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
diff --git a/drivers/i2c/busses/i2c-ibm_iic.c b/drivers/i2c/busses/i2c-ibm_iic.c
index 33a2abb6c063..405a2e240454 100644
--- a/drivers/i2c/busses/i2c-ibm_iic.c
+++ b/drivers/i2c/busses/i2c-ibm_iic.c
@@ -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) {
diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index b9734747d610..c5d2ba3c4cd0 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -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);
diff --git a/drivers/i2c/busses/i2c-intel-mid.c b/drivers/i2c/busses/i2c-intel-mid.c
index de3736bf6465..323fa018ffd5 100644
--- a/drivers/i2c/busses/i2c-intel-mid.c
+++ b/drivers/i2c/busses/i2c-intel-mid.c
@@ -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);
diff --git a/drivers/i2c/busses/i2c-iop3xx.c b/drivers/i2c/busses/i2c-iop3xx.c
index 2f99613fd677..bc993331c695 100644
--- a/drivers/i2c/busses/i2c-iop3xx.c
+++ b/drivers/i2c/busses/i2c-iop3xx.c
@@ -415,8 +415,6 @@ iop3xx_i2c_remove(struct platform_device *pdev)
         kfree(adapter_data);
         kfree(padapter);
 
-        platform_set_drvdata(pdev, NULL);
-
         return 0;
 }
 
diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
index a69459e5c3f3..5e705ee02f4a 100644
--- a/drivers/i2c/busses/i2c-mpc.c
+++ b/drivers/i2c/busses/i2c-mpc.c
@@ -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);
diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c
index 22d8ad353409..120f24646696 100644
--- a/drivers/i2c/busses/i2c-mxs.c
+++ b/drivers/i2c/busses/i2c-mxs.c
@@ -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;
 }
 
diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c
index 5b1b1948128e..650293ff4d62 100644
--- a/drivers/i2c/busses/i2c-nomadik.c
+++ b/drivers/i2c/busses/i2c-nomadik.c
@@ -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;
diff --git a/drivers/i2c/busses/i2c-ocores.c b/drivers/i2c/busses/i2c-ocores.c
index 6afa02db1156..dd3df76c2e35 100644
--- a/drivers/i2c/busses/i2c-ocores.c
+++ b/drivers/i2c/busses/i2c-ocores.c
@@ -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;
 }
diff --git a/drivers/i2c/busses/i2c-octeon.c b/drivers/i2c/busses/i2c-octeon.c
index 484ca771fdff..935585ef4d39 100644
--- a/drivers/i2c/busses/i2c-octeon.c
+++ b/drivers/i2c/busses/i2c-octeon.c
@@ -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;
 };
 
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 4cc2f0528c88..79d05128c77e 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -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))
diff --git a/drivers/i2c/busses/i2c-pca-platform.c b/drivers/i2c/busses/i2c-pca-platform.c
index a30d2f613c03..aa00df14e30b 100644
--- a/drivers/i2c/busses/i2c-pca-platform.c
+++ b/drivers/i2c/busses/i2c-pca-platform.c
@@ -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);
 
diff --git a/drivers/i2c/busses/i2c-pmcmsp.c b/drivers/i2c/busses/i2c-pmcmsp.c
index 083d68cfaf0b..f6389e2c9d02 100644
--- a/drivers/i2c/busses/i2c-pmcmsp.c
+++ b/drivers/i2c/busses/i2c-pmcmsp.c
@@ -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);
diff --git a/drivers/i2c/busses/i2c-pnx.c b/drivers/i2c/busses/i2c-pnx.c
index ce4097012e97..5f39c6d8117a 100644
--- a/drivers/i2c/busses/i2c-pnx.c
+++ b/drivers/i2c/busses/i2c-pnx.c
@@ -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;
 }
diff --git a/drivers/i2c/busses/i2c-powermac.c b/drivers/i2c/busses/i2c-powermac.c
index 0dd5b334d090..da54e673449d 100644
--- a/drivers/i2c/busses/i2c-powermac.c
+++ b/drivers/i2c/busses/i2c-powermac.c
@@ -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;
diff --git a/drivers/i2c/busses/i2c-puv3.c b/drivers/i2c/busses/i2c-puv3.c
index d7c512d717a7..261d7db437e2 100644
--- a/drivers/i2c/busses/i2c-puv3.c
+++ b/drivers/i2c/busses/i2c-puv3.c
@@ -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));
diff --git a/drivers/i2c/busses/i2c-pxa-pci.c b/drivers/i2c/busses/i2c-pxa-pci.c
index 3d4985695aed..9639be86e53f 100644
--- a/drivers/i2c/busses/i2c-pxa-pci.c
+++ b/drivers/i2c/busses/i2c-pxa-pci.c
@@ -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]);
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index 4a79e768a4d8..1e88e8d66c55 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -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);
diff --git a/drivers/i2c/busses/i2c-s6000.c b/drivers/i2c/busses/i2c-s6000.c
index 008836409efe..7c1ca5aca088 100644
--- a/drivers/i2c/busses/i2c-s6000.c
+++ b/drivers/i2c/busses/i2c-s6000.c
@@ -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);
diff --git a/drivers/i2c/busses/i2c-sh7760.c b/drivers/i2c/busses/i2c-sh7760.c
index 3a2253e1bf59..5351a2f34912 100644
--- a/drivers/i2c/busses/i2c-sh7760.c
+++ b/drivers/i2c/busses/i2c-sh7760.c
@@ -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;
 }
diff --git a/drivers/i2c/busses/i2c-stu300.c b/drivers/i2c/busses/i2c-stu300.c
index 580a0c04cb42..f1912c8520fe 100644
--- a/drivers/i2c/busses/i2c-stu300.c
+++ b/drivers/i2c/busses/i2c-stu300.c
@@ -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;
 }
 
diff --git a/drivers/i2c/busses/i2c-taos-evm.c b/drivers/i2c/busses/i2c-taos-evm.c
index 26c352a09298..6ffa56e08517 100644
--- a/drivers/i2c/busses/i2c-taos-evm.c
+++ b/drivers/i2c/busses/i2c-taos-evm.c
@@ -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");
diff --git a/drivers/i2c/busses/i2c-versatile.c b/drivers/i2c/busses/i2c-versatile.c
index eec20db6246f..f3a8790a07e8 100644
--- a/drivers/i2c/busses/i2c-versatile.c
+++ b/drivers/i2c/busses/i2c-versatile.c
@@ -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;
 }
diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c
index f042f6da0ace..332c720fb3fe 100644
--- a/drivers/i2c/busses/i2c-xiic.c
+++ b/drivers/i2c/busses/i2c-xiic.c
@@ -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);
diff --git a/drivers/i2c/busses/i2c-xlr.c b/drivers/i2c/busses/i2c-xlr.c
index a005265461da..86010293e23c 100644
--- a/drivers/i2c/busses/i2c-xlr.c
+++ b/drivers/i2c/busses/i2c-xlr.c
@@ -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;
 }
 
diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c
index 3862a953239c..2d1d2c5653fb 100644
--- a/drivers/i2c/busses/scx200_acb.c
+++ b/drivers/i2c/busses/scx200_acb.c
@@ -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;
diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c
index 9f50ef04a4bd..abc2e55aa243 100644
--- a/drivers/i2c/muxes/i2c-mux-gpio.c
+++ b/drivers/i2c/muxes/i2c-mux-gpio.c
@@ -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;