From 7eb90a3682fc42c5607cff931e5d0f6a9d52dc03 Mon Sep 17 00:00:00 2001 From: wwang Date: Wed, 16 Feb 2011 15:56:10 +0800 Subject: [PATCH] staging: rts_pstor: delete a function Delete a function named rtsx_transfer_sglist which won't be called. Signed-off-by: wwang Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rts_pstor/rtsx_transport.c | 136 ----------------------------- 1 file changed, 136 deletions(-) diff --git a/drivers/staging/rts_pstor/rtsx_transport.c b/drivers/staging/rts_pstor/rtsx_transport.c index e581f15..3b160dc 100644 --- a/drivers/staging/rts_pstor/rtsx_transport.c +++ b/drivers/staging/rts_pstor/rtsx_transport.c @@ -715,142 +715,6 @@ out: return err; } -int rtsx_transfer_sglist(struct rtsx_chip *chip, u8 card, - struct scatterlist *sg, int num_sg, - enum dma_data_direction dma_dir, int timeout) -{ - struct rtsx_dev *rtsx = chip->rtsx; - struct completion trans_done; - u8 dir; - int buf_cnt, i; - int err = 0; - long timeleft; - - if ((sg == NULL) || (num_sg <= 0)) - return -EIO; - - if (dma_dir == DMA_TO_DEVICE) { - dir = HOST_TO_DEVICE; - } else if (dma_dir == DMA_FROM_DEVICE) { - dir = DEVICE_TO_HOST; - } else { - return -ENXIO; - } - - if (card == SD_CARD) { - rtsx->check_card_cd = SD_EXIST; - } else if (card == MS_CARD) { - rtsx->check_card_cd = MS_EXIST; - } else if (card == XD_CARD) { - rtsx->check_card_cd = XD_EXIST; - } else { - rtsx->check_card_cd = 0; - } - - spin_lock_irq(&rtsx->reg_lock); - - /* set up data structures for the wakeup system */ - rtsx->done = &trans_done; - - rtsx->trans_state = STATE_TRANS_SG; - rtsx->trans_result = TRANS_NOT_READY; - - spin_unlock_irq(&rtsx->reg_lock); - - buf_cnt = dma_map_sg(&(rtsx->pci->dev), sg, num_sg, dma_dir); - - for (i = 0; i < buf_cnt; i++) { - u32 bier = 0; - u32 val = (1 << 31); - dma_addr_t addr = sg_dma_address(sg + i); - unsigned int len = sg_dma_len(sg + i); - - RTSX_DEBUGP("dma_addr = 0x%x, dma_len = %d\n", - (unsigned int)addr, len); - - val |= (u32)(dir & 0x01) << 29; - val |= (u32)(len & 0x00FFFFFF); - - spin_lock_irq(&rtsx->reg_lock); - - init_completion(&trans_done); - - if (i == (buf_cnt - 1)) { - /* If last transfer, disable data interrupt */ - bier = rtsx_readl(chip, RTSX_BIER); - rtsx_writel(chip, RTSX_BIER, bier & 0xBFFFFFFF); - } - - rtsx_writel(chip, RTSX_HDBAR, addr); - rtsx_writel(chip, RTSX_HDBCTLR, val); - - spin_unlock_irq(&rtsx->reg_lock); - - timeleft = wait_for_completion_interruptible_timeout( - &trans_done, timeout * HZ / 1000); - if (timeleft <= 0) { - RTSX_DEBUGP("Timeout (%s %d)\n", __func__, __LINE__); - RTSX_DEBUGP("chip->int_reg = 0x%x\n", chip->int_reg); - err = -ETIMEDOUT; - if (i == (buf_cnt - 1)) - rtsx_writel(chip, RTSX_BIER, bier); - goto out; - } - - spin_lock_irq(&rtsx->reg_lock); - if (rtsx->trans_result == TRANS_RESULT_FAIL) { - err = -EIO; - spin_unlock_irq(&rtsx->reg_lock); - if (i == (buf_cnt - 1)) - rtsx_writel(chip, RTSX_BIER, bier); - goto out; - } - spin_unlock_irq(&rtsx->reg_lock); - - if (i == (buf_cnt - 1)) { - /* If last transfer, enable data interrupt - * after transfer finished - */ - rtsx_writel(chip, RTSX_BIER, bier); - } - } - - /* Wait for TRANS_OK_INT */ - spin_lock_irq(&rtsx->reg_lock); - if (rtsx->trans_result == TRANS_NOT_READY) { - init_completion(&trans_done); - spin_unlock_irq(&rtsx->reg_lock); - timeleft = wait_for_completion_interruptible_timeout( - &trans_done, timeout * HZ / 1000); - if (timeleft <= 0) { - RTSX_DEBUGP("Timeout (%s %d)\n", __func__, __LINE__); - RTSX_DEBUGP("chip->int_reg = 0x%x\n", chip->int_reg); - err = -ETIMEDOUT; - goto out; - } - } else { - spin_unlock_irq(&rtsx->reg_lock); - } - - spin_lock_irq(&rtsx->reg_lock); - if (rtsx->trans_result == TRANS_RESULT_FAIL) { - err = -EIO; - } else if (rtsx->trans_result == TRANS_RESULT_OK) { - err = 0; - } - spin_unlock_irq(&rtsx->reg_lock); - -out: - rtsx->done = NULL; - rtsx->trans_state = STATE_TRANS_NONE; - dma_unmap_sg(&(rtsx->pci->dev), sg, num_sg, dma_dir); - - if (err < 0) - rtsx_stop_cmd(chip, card); - - return err; -} - int rtsx_transfer_data_partial(struct rtsx_chip *chip, u8 card, void *buf, size_t len, int use_sg, unsigned int *index, unsigned int *offset, enum dma_data_direction dma_dir, -- 2.7.4