Hello. On 25.03.19 08:18, Kangjie Lu wrote: > regmap_update_bits could fail and deserves a check. > > The patch adds the checks and if it fails, returns its error > code upstream. > > Signed-off-by: Kangjie Lu <kjlu@xxxxxxx> > --- > drivers/net/ieee802154/mcr20a.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/net/ieee802154/mcr20a.c b/drivers/net/ieee802154/mcr20a.c > index c589f5ae75bb..8bb53ec8d9cf 100644 > --- a/drivers/net/ieee802154/mcr20a.c > +++ b/drivers/net/ieee802154/mcr20a.c > @@ -533,6 +533,8 @@ mcr20a_start(struct ieee802154_hw *hw) > dev_dbg(printdev(lp), "no slotted operation\n"); > ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, > DAR_PHY_CTRL1_SLOTTED, 0x0); > + if (ret < 0) > + return ret; > > /* enable irq */ > enable_irq(lp->spi->irq); > @@ -540,11 +542,15 @@ mcr20a_start(struct ieee802154_hw *hw) > /* Unmask SEQ interrupt */ > ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL2, > DAR_PHY_CTRL2_SEQMSK, 0x0); > + if (ret < 0) > + return ret; > > /* Start the RX sequence */ > dev_dbg(printdev(lp), "start the RX sequence\n"); > ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, > DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_RX); > + if (ret < 0) > + return ret; > > return 0; > } > This patch has been applied to the wpan tree and will be part of the next pull request to net. Thanks! regards Stefan Schmidt
