On 07/31/2015 10:04 AM, Krzysztof Kozlowski wrote: > 2015-07-30 18:14 GMT+09:00 Robert Baldyga <r.baldyga@xxxxxxxxxxx>: >> Hello, >> >> This patch set fixes bug causing serial hang in DMA mode for FIFO sizes >> smaller than cache alignment. The first patch fixes DMA mode entering >> condition to avoid starting with buffer smaller than cache line size. >> Second patch fixes the serial hang bug, which was caused by unproper >> buffer aligning algorithm which assumed that there is always enough >> free space in FIFO for excessive bytes of buffer that is being alligned. >> >> Best regards, >> Robert Baldyga >> >> Marek Szyprowski (1): >> serial: samsung: calculate min_dma_size >> >> Robert Baldyga (1): >> serial: samsung: fix DMA for FIFO smaller than cache line size >> >> drivers/tty/serial/samsung.c | 47 +++++++++++++++++++++++++++++--------------- >> drivers/tty/serial/samsung.h | 1 + >> 2 files changed, 32 insertions(+), 16 deletions(-) > > Does this apply for stable backporting? Or at least fixes tag > indicating a bug? I could not figure this out from description of > first patch. For second patch it seems it applies. These patches are two steps of fixing the bug, so they both apply for stable backporting. > > Anyway I would appreciate a reported-by credits. Sure ;) Thanks, Robert -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
