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cdae05a0f0
As Joel pointed out, edma_read_position() uses memcpy_fromio() to read the parameter ram. That's not synchronized with the internal update as it does a byte by byte copy. We need to do a 32bit read to get a consistent value. Further reading destination and source is pointless. In DEV_TO_MEM transfers we are only interested in the destination, in MEM_TO_DEV we care about the source. In MEM_TO_MEM it really does not matter which one you read. Simple solution: Remove the pointers, select dest/source via a bool and return the read value. Remove the export of this function while at it. The only potential user is the dmaengine and that's always builtin. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Joel Fernandes <joelf@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> |
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| keys | ||
| kvm | ||
| linux | ||
| math-emu | ||
| media | ||
| memory | ||
| misc | ||
| net | ||
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| ras | ||
| rdma | ||
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| scsi | ||
| sound | ||
| target | ||
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| uapi | ||
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| Kbuild | ||