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crypto: brcm - add NULL check on of_match_device() return value 

Check return value from call to of_match_device()
in order to prevent a NULL pointer dereference.

In case of NULL print error message and return -ENODEV

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gustavo A. R. Silva 2017-07-07 01:33:33 -05:00 committed by Herbert Xu
parent 24086e3d44
commit c6090480b2
1 changed files with 5 additions and 0 deletions
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5
drivers/crypto/bcm/cipher.c
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@ -4813,6 +4813,11 @@ static int spu_dt_read(struct platform_device *pdev)
int err;
match = of_match_device(of_match_ptr(bcm_spu_dt_ids), dev);
if (!match) {
dev_err(&pdev->dev, "Failed to match device\n");
return -ENODEV;
}
matched_spu_type = match->data;
if (iproc_priv.spu.num_spu > 1) {