diff options
Diffstat (limited to 'drivers/usb/mtu3/mtu3_qmu.c')
| -rw-r--r-- | drivers/usb/mtu3/mtu3_qmu.c | 28 |
1 files changed, 1 insertions, 27 deletions
diff --git a/drivers/usb/mtu3/mtu3_qmu.c b/drivers/usb/mtu3/mtu3_qmu.c index ff62ba232177..09f19f70fe8f 100644 --- a/drivers/usb/mtu3/mtu3_qmu.c +++ b/drivers/usb/mtu3/mtu3_qmu.c @@ -154,27 +154,6 @@ void mtu3_gpd_ring_free(struct mtu3_ep *mep) memset(ring, 0, sizeof(*ring)); } -/* - * calculate check sum of a gpd or bd - * add "noinline" and "mb" to prevent wrong calculation - */ -static noinline u8 qmu_calc_checksum(u8 *data) -{ - u8 chksum = 0; - int i; - - data[1] = 0x0; /* set checksum to 0 */ - - mb(); /* ensure the gpd/bd is really up-to-date */ - for (i = 0; i < QMU_CHECKSUM_LEN; i++) - chksum += data[i]; - - /* Default: HWO=1, @flag[bit0] */ - chksum += 1; - - return 0xFF - chksum; -} - void mtu3_qmu_resume(struct mtu3_ep *mep) { struct mtu3 *mtu = mep->mtu; @@ -260,7 +239,6 @@ static int mtu3_prepare_tx_gpd(struct mtu3_ep *mep, struct mtu3_request *mreq) if (req->zero) gpd->ext_flag |= GPD_EXT_FLAG_ZLP; - gpd->chksum = qmu_calc_checksum((u8 *)gpd); gpd->flag |= GPD_FLAGS_HWO; mreq->gpd = gpd; @@ -295,7 +273,6 @@ static int mtu3_prepare_rx_gpd(struct mtu3_ep *mep, struct mtu3_request *mreq) gpd->next_gpd = cpu_to_le32(lower_32_bits(enq_dma)); ext_addr |= GPD_EXT_NGP(upper_32_bits(enq_dma)); gpd->rx_ext_addr = cpu_to_le16(ext_addr); - gpd->chksum = qmu_calc_checksum((u8 *)gpd); gpd->flag |= GPD_FLAGS_HWO; mreq->gpd = gpd; @@ -323,7 +300,6 @@ int mtu3_qmu_start(struct mtu3_ep *mep) /* set QMU start address */ write_txq_start_addr(mbase, epnum, ring->dma); mtu3_setbits(mbase, MU3D_EP_TXCR0(epnum), TX_DMAREQEN); - mtu3_setbits(mbase, U3D_QCR0, QMU_TX_CS_EN(epnum)); /* send zero length packet according to ZLP flag in GPD */ mtu3_setbits(mbase, U3D_QCR1, QMU_TX_ZLP(epnum)); mtu3_writel(mbase, U3D_TQERRIESR0, @@ -338,7 +314,6 @@ int mtu3_qmu_start(struct mtu3_ep *mep) } else { write_rxq_start_addr(mbase, epnum, ring->dma); mtu3_setbits(mbase, MU3D_EP_RXCR0(epnum), RX_DMAREQEN); - mtu3_setbits(mbase, U3D_QCR0, QMU_RX_CS_EN(epnum)); /* don't expect ZLP */ mtu3_clrbits(mbase, U3D_QCR3, QMU_RX_ZLP(epnum)); /* move to next GPD when receive ZLP */ @@ -427,7 +402,7 @@ static void qmu_tx_zlp_error_handler(struct mtu3 *mtu, u8 epnum) return; } - dev_dbg(mtu->dev, "%s send ZLP for req=%p\n", __func__, mreq); + dev_dbg(mtu->dev, "%s send ZLP for req=%p\n", __func__, req); mtu3_clrbits(mbase, MU3D_EP_TXCR0(mep->epnum), TX_DMAREQEN); @@ -441,7 +416,6 @@ static void qmu_tx_zlp_error_handler(struct mtu3 *mtu, u8 epnum) /* by pass the current GDP */ gpd_current->flag |= GPD_FLAGS_BPS; - gpd_current->chksum = qmu_calc_checksum((u8 *)gpd_current); gpd_current->flag |= GPD_FLAGS_HWO; /*enable DMAREQEN, switch back to QMU mode */ |