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msm_serial_hs: Fix type inconsistency for tx and rx command_ptr_ptr
Both tx and rx command_ptr_ptr are of type u32*. While allocating memory for it, sizeof(u32 *) is used as part of kmalloc API instead of sizeof(u32). ADM Hardare requires size of command_ptr_ptr as 1 Word. Both sizeof(u32 *) and sizeof(u32) are same on 32-bit architecture whereas sizeof(u32 *) would be different in size compare to sizeof(u32) on anyother architecture. Hence correct usage of sizeof(command_ptr_ptr) for Tx and Rx with kmalloc and dma_(map/unmap)_single APIs. Signed-off-by: Mayank Rana <mrana@codeaurora.org> Reported-by: Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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7f97c000e8
commit
8431de80da
@ -422,9 +422,9 @@ static int __devexit msm_hs_remove(struct platform_device *pdev)
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msm_uport->rx.rbuffer);
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dma_pool_destroy(msm_uport->rx.pool);
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dma_unmap_single(dev, msm_uport->rx.cmdptr_dmaaddr, sizeof(u32 *),
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dma_unmap_single(dev, msm_uport->rx.cmdptr_dmaaddr, sizeof(u32),
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DMA_TO_DEVICE);
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dma_unmap_single(dev, msm_uport->tx.mapped_cmd_ptr_ptr, sizeof(u32 *),
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dma_unmap_single(dev, msm_uport->tx.mapped_cmd_ptr_ptr, sizeof(u32),
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DMA_TO_DEVICE);
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dma_unmap_single(dev, msm_uport->tx.mapped_cmd_ptr, sizeof(dmov_box),
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DMA_TO_DEVICE);
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@ -812,7 +812,7 @@ static void msm_hs_submit_tx_locked(struct uart_port *uport)
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*tx->command_ptr_ptr = CMD_PTR_LP | DMOV_CMD_ADDR(tx->mapped_cmd_ptr);
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dma_sync_single_for_device(uport->dev, tx->mapped_cmd_ptr_ptr,
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sizeof(u32 *), DMA_TO_DEVICE);
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sizeof(u32), DMA_TO_DEVICE);
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/* Save tx_count to use in Callback */
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tx->tx_count = tx_count;
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@ -1537,7 +1537,7 @@ static int __devinit uartdm_init_port(struct uart_port *uport)
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if (!tx->command_ptr)
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return -ENOMEM;
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tx->command_ptr_ptr = kmalloc(sizeof(u32 *), GFP_KERNEL | __GFP_DMA);
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tx->command_ptr_ptr = kmalloc(sizeof(u32), GFP_KERNEL | __GFP_DMA);
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if (!tx->command_ptr_ptr) {
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ret = -ENOMEM;
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goto err_tx_command_ptr_ptr;
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@ -1547,7 +1547,7 @@ static int __devinit uartdm_init_port(struct uart_port *uport)
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sizeof(dmov_box), DMA_TO_DEVICE);
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tx->mapped_cmd_ptr_ptr = dma_map_single(uport->dev,
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tx->command_ptr_ptr,
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sizeof(u32 *), DMA_TO_DEVICE);
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sizeof(u32), DMA_TO_DEVICE);
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tx->xfer.cmdptr = DMOV_CMD_ADDR(tx->mapped_cmd_ptr_ptr);
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init_waitqueue_head(&rx->wait);
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@ -1575,7 +1575,7 @@ static int __devinit uartdm_init_port(struct uart_port *uport)
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goto err_rx_command_ptr;
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}
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rx->command_ptr_ptr = kmalloc(sizeof(u32 *), GFP_KERNEL | __GFP_DMA);
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rx->command_ptr_ptr = kmalloc(sizeof(u32), GFP_KERNEL | __GFP_DMA);
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if (!rx->command_ptr_ptr) {
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pr_err("%s(): cannot allocate rx->command_ptr_ptr", __func__);
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ret = -ENOMEM;
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@ -1593,7 +1593,7 @@ static int __devinit uartdm_init_port(struct uart_port *uport)
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*rx->command_ptr_ptr = CMD_PTR_LP | DMOV_CMD_ADDR(rx->mapped_cmd_ptr);
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rx->cmdptr_dmaaddr = dma_map_single(uport->dev, rx->command_ptr_ptr,
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sizeof(u32 *), DMA_TO_DEVICE);
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sizeof(u32), DMA_TO_DEVICE);
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rx->xfer.cmdptr = DMOV_CMD_ADDR(rx->cmdptr_dmaaddr);
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INIT_WORK(&rx->tty_work, msm_hs_tty_flip_buffer_work);
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@ -1609,7 +1609,7 @@ err_dma_pool_alloc:
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dma_pool_destroy(msm_uport->rx.pool);
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err_dma_pool_create:
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dma_unmap_single(uport->dev, msm_uport->tx.mapped_cmd_ptr_ptr,
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sizeof(u32 *), DMA_TO_DEVICE);
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sizeof(u32), DMA_TO_DEVICE);
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dma_unmap_single(uport->dev, msm_uport->tx.mapped_cmd_ptr,
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sizeof(dmov_box), DMA_TO_DEVICE);
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kfree(msm_uport->tx.command_ptr_ptr);
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