evie/android_kernel_oneplus_msm8998
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spi: spi_qsd: Set DMA mask for SPI device

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Set the DMA mask for the SPI device appropriately.

This will alleviate usage of bounce buffers by the dma kernel library and
prevent some of the crashes due to the kernel running out of bounce
buffers.

Change-Id: I7b0b123be6e7bb1e30d0755ca8b1b72ea4e2b5f6
Signed-off-by: Girish Mahadevan <girishm@codeaurora.org>
This commit is contained in:
Girish Mahadevan 2016-12-27 15:07:42 -07:00
parent efaccb4adb
commit f61d2a9a02
2 changed files with 9 additions and 1 deletions
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1
drivers/spi/spi_qsd.c
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@ -2535,6 +2535,7 @@ static int msm_spi_probe(struct platform_device *pdev)
dd->use_dma = 1;
}
spi_dma_mask(&pdev->dev);
skip_dma_resources:
spin_lock_init(&dd->queue_lock);

9
drivers/spi/spi_qsd.h
View file

@ -1,4 +1,4 @@
/* Copyright (c) 2014-2016, The Linux Foundation. All rights reserved.
/* Copyright (c) 2014-2017, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@ -167,6 +167,13 @@ enum msm_spi_state {
/* Data Mover commands should be aligned to 64 bit(8 bytes) */
#define DM_BYTE_ALIGN 8
#if defined(CONFIG_ARM64) || defined(CONFIG_LPAE)
#define spi_dma_mask(dev) (dma_set_mask((dev), DMA_BIT_MASK(36)))
#else
#define spi_dma_mask(dev) (dma_set_mask((dev), DMA_BIT_MASK(32)))
#endif
enum msm_spi_qup_version {
SPI_QUP_VERSION_NONE = 0x0,
SPI_QUP_VERSION_BFAM = 0x2,