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mtd: gpmi: remove the unnecessary pr_err()
The error messages for the failure of dmaengine_prep_slave_sg are not necessary, this patch removes all these pr_err, and returns with the proper error code -EINVAL, not -1. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
parent
4f0614a020
commit
43a34b8b73
1 changed files with 22 additions and 41 deletions
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@ -1128,10 +1128,8 @@ int gpmi_send_command(struct gpmi_nand_data *this)
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desc = dmaengine_prep_slave_sg(channel,
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(struct scatterlist *)pio,
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ARRAY_SIZE(pio), DMA_TRANS_NONE, 0);
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if (!desc) {
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pr_err("step 1 error\n");
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return -1;
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}
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if (!desc)
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return -EINVAL;
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/* [2] send out the COMMAND + ADDRESS string stored in @buffer */
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sgl = &this->cmd_sgl;
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@ -1141,11 +1139,8 @@ int gpmi_send_command(struct gpmi_nand_data *this)
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desc = dmaengine_prep_slave_sg(channel,
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sgl, 1, DMA_MEM_TO_DEV,
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DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
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if (!desc) {
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pr_err("step 2 error\n");
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return -1;
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}
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if (!desc)
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return -EINVAL;
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/* [3] submit the DMA */
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set_dma_type(this, DMA_FOR_COMMAND);
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@ -1174,20 +1169,17 @@ int gpmi_send_data(struct gpmi_nand_data *this)
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pio[1] = 0;
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desc = dmaengine_prep_slave_sg(channel, (struct scatterlist *)pio,
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ARRAY_SIZE(pio), DMA_TRANS_NONE, 0);
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if (!desc) {
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pr_err("step 1 error\n");
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return -1;
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}
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if (!desc)
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return -EINVAL;
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/* [2] send DMA request */
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prepare_data_dma(this, DMA_TO_DEVICE);
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desc = dmaengine_prep_slave_sg(channel, &this->data_sgl,
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1, DMA_MEM_TO_DEV,
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DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
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if (!desc) {
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pr_err("step 2 error\n");
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return -1;
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}
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if (!desc)
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return -EINVAL;
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/* [3] submit the DMA */
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set_dma_type(this, DMA_FOR_WRITE_DATA);
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return start_dma_without_bch_irq(this, desc);
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@ -1211,20 +1203,16 @@ int gpmi_read_data(struct gpmi_nand_data *this)
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desc = dmaengine_prep_slave_sg(channel,
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(struct scatterlist *)pio,
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ARRAY_SIZE(pio), DMA_TRANS_NONE, 0);
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if (!desc) {
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pr_err("step 1 error\n");
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return -1;
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}
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if (!desc)
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return -EINVAL;
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/* [2] : send DMA request */
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prepare_data_dma(this, DMA_FROM_DEVICE);
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desc = dmaengine_prep_slave_sg(channel, &this->data_sgl,
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1, DMA_DEV_TO_MEM,
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DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
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if (!desc) {
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pr_err("step 2 error\n");
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return -1;
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}
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if (!desc)
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return -EINVAL;
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/* [3] : submit the DMA */
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set_dma_type(this, DMA_FOR_READ_DATA);
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@ -1269,10 +1257,9 @@ int gpmi_send_page(struct gpmi_nand_data *this,
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(struct scatterlist *)pio,
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ARRAY_SIZE(pio), DMA_TRANS_NONE,
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DMA_CTRL_ACK);
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if (!desc) {
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pr_err("step 2 error\n");
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return -1;
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}
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if (!desc)
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return -EINVAL;
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set_dma_type(this, DMA_FOR_WRITE_ECC_PAGE);
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return start_dma_with_bch_irq(this, desc);
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}
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@ -1304,10 +1291,8 @@ int gpmi_read_page(struct gpmi_nand_data *this,
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desc = dmaengine_prep_slave_sg(channel,
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(struct scatterlist *)pio, 2,
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DMA_TRANS_NONE, 0);
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if (!desc) {
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pr_err("step 1 error\n");
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return -1;
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}
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if (!desc)
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return -EINVAL;
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/* [2] Enable the BCH block and read. */
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command_mode = BV_GPMI_CTRL0_COMMAND_MODE__READ;
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@ -1334,10 +1319,8 @@ int gpmi_read_page(struct gpmi_nand_data *this,
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(struct scatterlist *)pio,
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ARRAY_SIZE(pio), DMA_TRANS_NONE,
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DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
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if (!desc) {
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pr_err("step 2 error\n");
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return -1;
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}
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if (!desc)
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return -EINVAL;
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/* [3] Disable the BCH block */
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command_mode = BV_GPMI_CTRL0_COMMAND_MODE__WAIT_FOR_READY;
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@ -1355,10 +1338,8 @@ int gpmi_read_page(struct gpmi_nand_data *this,
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(struct scatterlist *)pio, 3,
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DMA_TRANS_NONE,
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DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
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if (!desc) {
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pr_err("step 3 error\n");
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return -1;
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}
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if (!desc)
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return -EINVAL;
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/* [4] submit the DMA */
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set_dma_type(this, DMA_FOR_READ_ECC_PAGE);
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