From: Mayank Rana Date: Thu, 8 Dec 2011 03:36:08 +0000 (+0530) Subject: msm_serial_hs: Fix type inconsistency for tx and rx command_ptr_ptr X-Git-Tag: firefly_0821_release~3680^2~3806^2~23 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8431de80dad20979cc8354a90f70e2faac017932;p=firefly-linux-kernel-4.4.55.git 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 Reported-by: Ilia Mirkin Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/serial/msm_serial_hs.c b/drivers/tty/serial/msm_serial_hs.c index 60c6eb850265..9f67b62cb77d 100644 --- a/drivers/tty/serial/msm_serial_hs.c +++ b/drivers/tty/serial/msm_serial_hs.c @@ -422,9 +422,9 @@ static int __devexit msm_hs_remove(struct platform_device *pdev) msm_uport->rx.rbuffer); dma_pool_destroy(msm_uport->rx.pool); - dma_unmap_single(dev, msm_uport->rx.cmdptr_dmaaddr, sizeof(u32 *), + dma_unmap_single(dev, msm_uport->rx.cmdptr_dmaaddr, sizeof(u32), DMA_TO_DEVICE); - dma_unmap_single(dev, msm_uport->tx.mapped_cmd_ptr_ptr, sizeof(u32 *), + dma_unmap_single(dev, msm_uport->tx.mapped_cmd_ptr_ptr, sizeof(u32), DMA_TO_DEVICE); dma_unmap_single(dev, msm_uport->tx.mapped_cmd_ptr, sizeof(dmov_box), DMA_TO_DEVICE); @@ -812,7 +812,7 @@ static void msm_hs_submit_tx_locked(struct uart_port *uport) *tx->command_ptr_ptr = CMD_PTR_LP | DMOV_CMD_ADDR(tx->mapped_cmd_ptr); dma_sync_single_for_device(uport->dev, tx->mapped_cmd_ptr_ptr, - sizeof(u32 *), DMA_TO_DEVICE); + sizeof(u32), DMA_TO_DEVICE); /* Save tx_count to use in Callback */ tx->tx_count = tx_count; @@ -1537,7 +1537,7 @@ static int __devinit uartdm_init_port(struct uart_port *uport) if (!tx->command_ptr) return -ENOMEM; - tx->command_ptr_ptr = kmalloc(sizeof(u32 *), GFP_KERNEL | __GFP_DMA); + tx->command_ptr_ptr = kmalloc(sizeof(u32), GFP_KERNEL | __GFP_DMA); if (!tx->command_ptr_ptr) { ret = -ENOMEM; goto err_tx_command_ptr_ptr; @@ -1547,7 +1547,7 @@ static int __devinit uartdm_init_port(struct uart_port *uport) sizeof(dmov_box), DMA_TO_DEVICE); tx->mapped_cmd_ptr_ptr = dma_map_single(uport->dev, tx->command_ptr_ptr, - sizeof(u32 *), DMA_TO_DEVICE); + sizeof(u32), DMA_TO_DEVICE); tx->xfer.cmdptr = DMOV_CMD_ADDR(tx->mapped_cmd_ptr_ptr); init_waitqueue_head(&rx->wait); @@ -1575,7 +1575,7 @@ static int __devinit uartdm_init_port(struct uart_port *uport) goto err_rx_command_ptr; } - rx->command_ptr_ptr = kmalloc(sizeof(u32 *), GFP_KERNEL | __GFP_DMA); + rx->command_ptr_ptr = kmalloc(sizeof(u32), GFP_KERNEL | __GFP_DMA); if (!rx->command_ptr_ptr) { pr_err("%s(): cannot allocate rx->command_ptr_ptr", __func__); ret = -ENOMEM; @@ -1593,7 +1593,7 @@ static int __devinit uartdm_init_port(struct uart_port *uport) *rx->command_ptr_ptr = CMD_PTR_LP | DMOV_CMD_ADDR(rx->mapped_cmd_ptr); rx->cmdptr_dmaaddr = dma_map_single(uport->dev, rx->command_ptr_ptr, - sizeof(u32 *), DMA_TO_DEVICE); + sizeof(u32), DMA_TO_DEVICE); rx->xfer.cmdptr = DMOV_CMD_ADDR(rx->cmdptr_dmaaddr); INIT_WORK(&rx->tty_work, msm_hs_tty_flip_buffer_work); @@ -1609,7 +1609,7 @@ err_dma_pool_alloc: dma_pool_destroy(msm_uport->rx.pool); err_dma_pool_create: dma_unmap_single(uport->dev, msm_uport->tx.mapped_cmd_ptr_ptr, - sizeof(u32 *), DMA_TO_DEVICE); + sizeof(u32), DMA_TO_DEVICE); dma_unmap_single(uport->dev, msm_uport->tx.mapped_cmd_ptr, sizeof(dmov_box), DMA_TO_DEVICE); kfree(msm_uport->tx.command_ptr_ptr);