The mcbsp DMA op mode is tightly integrated with the
mcbsp client driver operation and hence is unsuitable
for userspace configuration via sysfs.
Signed-off-by: Liam Girdwood <l...@slimlogic.co.uk>
---
arch/arm/plat-omap/mcbsp.c | 30 +-----------------------------
1 files changed, 1 insertions(+), 29 deletions(-)
diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c
index 7785050..b7b8b5e 100644
--- a/arch/arm/plat-omap/mcbsp.c
+++ b/arch/arm/plat-omap/mcbsp.c
@@ -1546,35 +1546,7 @@ static ssize_t dma_op_mode_show(struct device *dev,
return len;
}
-static ssize_t dma_op_mode_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t size)
-{
- struct omap_mcbsp *mcbsp = dev_get_drvdata(dev);
- const char * const *s;
- int i = 0;
-
- for (s = &dma_op_modes[i]; i < ARRAY_SIZE(dma_op_modes); s++, i++)
- if (sysfs_streq(buf, *s))
- break;
-
- if (i == ARRAY_SIZE(dma_op_modes))
- return -EINVAL;
-
- spin_lock_irq(&mcbsp->lock);
- if (!mcbsp->free) {
- size = -EBUSY;
- goto unlock;
- }
- mcbsp->dma_op_mode = i;
-
-unlock:
- spin_unlock_irq(&mcbsp->lock);
-
- return size;
-}
-
-static DEVICE_ATTR(dma_op_mode, 0644, dma_op_mode_show, dma_op_mode_store);
+static DEVICE_ATTR(dma_op_mode, 0644, dma_op_mode_show, NULL);
static ssize_t st_taps_show(struct device *dev,
struct device_attribute *attr, char *buf)
--
1.7.0.4
--
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