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authorMischa Jonker <mischa.jonker@synopsys.com>2013-07-26 14:08:14 +0200
committerPantelis Antoniou <panto@antoniou-consulting.com>2013-09-20 18:59:11 +0300
commit2136d22630ef5acf36b90c45b6e44e964547b618 (patch)
tree900e73dfa0629d6a3f3739322c9ad3d32ddfe653 /include/spd_sdram.h
parentda61fa5f42133593be51764b55a905330eae5063 (diff)
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mmc/dw_mmc: Fix DMA descriptor corruption
In dwmci_prepare_data, the descriptors are allocated for DMA transfer. These are allocated using the ALLOC_CACHE_ALIGN_BUFFER. This macro uses the stack to allocate these descriptors. This becomes a problem if the DMA transfer continues after the processor leaves the function in which the descriptors were allocated. Therefore, I have moved the allocated of the buffers up one level, to dwmci_send_cmd(). The DMA transfer should be complete when leaving this function. Signed-off-by: Mischa Jonker <mjonker@synopsys.com> Cc: Alexey Brodkin <abrodkin@synopsys.com> Cc: Jaehoon Chung <jh80.chung@samsung.com> Cc: Andy Fleming <afleming@gmail.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Diffstat (limited to 'include/spd_sdram.h')
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