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net: ieee802154: fix potential null pointer dereference 

Null check at line 918: if (!spi) {, implies spi might be NULL.
Function spi_get_drvdata() dereference pointer spi.
Move pointer priv assignment after the null check.

Addresses-Coverity-ID: 1408888
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Gustavo A. R. Silva 2017-05-23 13:11:47 -05:00 committed by Marcel Holtmann
parent a611c58b3d
commit 7dab546764
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ieee802154/ca8210.c
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@ -912,7 +912,7 @@ static int ca8210_spi_transfer(
)
{
int i, status = 0;
struct ca8210_priv *priv = spi_get_drvdata(spi);
struct ca8210_priv *priv;
struct cas_control *cas_ctl;
if (!spi) {
@ -923,6 +923,7 @@ static int ca8210_spi_transfer(
return -ENODEV;
}
priv = spi_get_drvdata(spi);
reinit_completion(&priv->spi_transfer_complete);
dev_dbg(&spi->dev, "ca8210_spi_transfer called\n");