* Mathias Nyman <[email protected]> [101025 07:22]: > Flush the writes to IRQSTATUS_L0 register in the DMA interrupt handler by > reading the register > directly after write. This prevents the spurious DMA interrupts noted when > using VDD_OPP 1
Adding this to omap-fixes. For future arch/arm/*omap*/ patches, please always Cc also linux-arm-kernel list. That way I can apply the patch without a need to repost. Regards, Tony > Signed-off-by: Mathias Nyman <[email protected]> > --- > arch/arm/plat-omap/dma.c | 2 ++ > 1 files changed, 2 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c > index f5c5b8d..2c28265 100644 > --- a/arch/arm/plat-omap/dma.c > +++ b/arch/arm/plat-omap/dma.c > @@ -1983,6 +1983,8 @@ static int omap2_dma_handle_ch(int ch) > > dma_write(OMAP2_DMA_CSR_CLEAR_MASK, CSR(ch)); > dma_write(1 << ch, IRQSTATUS_L0); > + /* read back the register to flush the write */ > + dma_read(IRQSTATUS_L0); > > /* If the ch is not chained then chain_id will be -1 */ > if (dma_chan[ch].chain_id != -1) { > -- > 1.5.6.5 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
