diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath5k/dma.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/dma.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath/ath5k/dma.c b/drivers/net/wireless/ath/ath5k/dma.c index bfdfcff42a1e..3fe634f588c2 100644 --- a/drivers/net/wireless/ath/ath5k/dma.c +++ b/drivers/net/wireless/ath/ath5k/dma.c @@ -95,11 +95,18 @@ u32 ath5k_hw_get_rxdp(struct ath5k_hw *ah) * @ah: The &struct ath5k_hw * @phys_addr: RX descriptor address * - * XXX: Should we check if rx is enabled before setting rxdp ? + * Returns -EIO if rx is active */ -void ath5k_hw_set_rxdp(struct ath5k_hw *ah, u32 phys_addr) +int ath5k_hw_set_rxdp(struct ath5k_hw *ah, u32 phys_addr) { + if (ath5k_hw_reg_read(ah, AR5K_CR) & AR5K_CR_RXE) { + ATH5K_DBG(ah->ah_sc, ATH5K_DEBUG_DMA, + "tried to set RXDP while rx was active !\n"); + return -EIO; + } + ath5k_hw_reg_write(ah, phys_addr, AR5K_RXDP); + return 0; } |