re: mmc: moxart: Add MOXA ART SD/MMC driver

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Hello Jonas Jensen,

The patch 1b66e94e6b99: "mmc: moxart: Add MOXA ART SD/MMC driver"
from Apr 9, 2014, leads to the following static checker warning:

	drivers/mmc/host/moxart-mmc.c:691 moxart_remove()
	warn: variable dereferenced before check 'mmc' (see line 687)

drivers/mmc/host/moxart-mmc.c
   684  static int moxart_remove(struct platform_device *pdev)
   685  {
   686          struct mmc_host *mmc = dev_get_drvdata(&pdev->dev);
   687          struct moxart_host *host = mmc_priv(mmc);
                                           ^^^^^^^^^^^^^
Dereference.

   688  
   689          dev_set_drvdata(&pdev->dev, NULL);
   690  
   691          if (mmc) {
                    ^^^
Check.

   692                  if (!IS_ERR(host->dma_chan_tx))

regards,
dan carpenter
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