> >> drivers/i2c/busses/Kconfig | 2 +- > >> drivers/i2c/busses/i2c-tegra.c | 362 > >> ++++++++++++++++++++++++++++++++++++++--- > >> 2 files changed, 339 insertions(+), 25 deletions(-) > > > > Tegra20 crashes because of this patch: > > > [snip] > > <4>[ 3.395915] ------------[ cut here ]------------ > > <2>[ 3.395919] kernel BUG at drivers/i2c/busses/i2c-tegra.c:810! > The BUG line is from: > > if (status & I2C_INT_PACKET_XFER_COMPLETE) { > if (i2c_dev->is_curr_dma_xfer) > i2c_dev->msg_buf_remaining = 0; > BUG_ON(i2c_dev->msg_buf_remaining); > complete(&i2c_dev->msg_complete); > } > BUG_ON line is not part of this change. It was already there in existing driver. Based on log, I see DMA transfer is done for 224 bytes followed by 1 successful PIO transfer and then on next PIO transfer it received packet xfer complete interrupt with incomplete transfer bytes and that where it hit BUG_ON condition.
- Re: [PATCH V8 2/5] i2c: tegra: Add Bus Clear Mast... Thierry Reding
- Re: [PATCH V8 2/5] i2c: tegra: Add Bus Clear Mast... Dmitry Osipenko
- [PATCH V8 4/5] i2c: tegra: Update transfer timeout Sowjanya Komatineni
- Re: [PATCH V8 4/5] i2c: tegra: Update transfer ti... Thierry Reding
- [PATCH V8 3/5] i2c: tegra: Add DMA Support Sowjanya Komatineni
- Re: [PATCH V8 3/5] i2c: tegra: Add DMA Support Thierry Reding
- RE: [PATCH V8 3/5] i2c: tegra: Add DMA Suppor... Sowjanya Komatineni
- Re: [PATCH V8 3/5] i2c: tegra: Add DMA Suppor... Dmitry Osipenko
- Re: [PATCH V8 3/5] i2c: tegra: Add DMA Support Dmitry Osipenko
- Re: [PATCH V8 3/5] i2c: tegra: Add DMA Suppor... Dmitry Osipenko
- RE: [PATCH V8 3/5] i2c: tegra: Add DMA Su... Sowjanya Komatineni
- Re: [PATCH V8 3/5] i2c: tegra: Add DM... Dmitry Osipenko
- Re: [PATCH V8 3/5] i2c: tegra: A... Dmitry Osipenko
- Re: [PATCH V8 3/5] i2c: tegr... Dmitry Osipenko
- RE: [PATCH V8 3/5] i2c: tegr... Sowjanya Komatineni
- RE: [PATCH V8 3/5] i2c: tegr... Sowjanya Komatineni
- Re: [PATCH V8 3/5] i2c: tegr... Dmitry Osipenko
- [PATCH V8 5/5] i2c: tegra: Add I2C interface timing su... Sowjanya Komatineni
- Re: [PATCH V8 5/5] i2c: tegra: Add I2C interface ... Thierry Reding
- Re: [PATCH V8 1/5] i2c: tegra: Sort all the include he... Thierry Reding
- Re: [PATCH V8 1/5] i2c: tegra: Sort all the include he... Dmitry Osipenko