Hi Wolfram, > -----Original Message----- > From: Sricharan [mailto:sricharan@xxxxxxxxxxxxxx] > Sent: Saturday, February 13, 2016 12:29 PM > To: 'Wolfram Sang' > Cc: 'devicetree@xxxxxxxxxxxxxxx'; 'linux-arm-msm@xxxxxxxxxxxxxxx'; > 'agross@xxxxxxxxxxxxxx'; 'linux-kernel@xxxxxxxxxxxxxxx'; 'linux- > i2c@xxxxxxxxxxxxxxx'; 'iivanov@xxxxxxxxxx'; 'galak@xxxxxxxxxxxxxx'; > 'dmaengine@xxxxxxxxxxxxxxx'; 'linux-arm-kernel@xxxxxxxxxxxxxxxxxxx'; > 'andy.gross@xxxxxxxxxx'; 'ntelkar@xxxxxxxxxxxxxx'; 'architt@xxxxxxxxxxxxxx' > Subject: RE: [PATCH V7 4/6] i2c: qup: Add bam dma capabilities > > Hi Wolfram, > > > -----Original Message----- > > From: Wolfram Sang [mailto:wsa@xxxxxxxxxxxxx] > > Sent: Saturday, February 13, 2016 12:08 AM > > To: Sricharan R > > Cc: devicetree@xxxxxxxxxxxxxxx; linux-arm-msm@xxxxxxxxxxxxxxx; > > agross@xxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; linux- > > i2c@xxxxxxxxxxxxxxx; iivanov@xxxxxxxxxx; galak@xxxxxxxxxxxxxx; > > dmaengine@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; > > andy.gross@xxxxxxxxxx; ntelkar@xxxxxxxxxxxxxx; architt@xxxxxxxxxxxxxx > > Subject: Re: [PATCH V7 4/6] i2c: qup: Add bam dma capabilities > > > > On Tue, Jan 19, 2016 at 03:32:44PM +0530, Sricharan R wrote: > > > QUP cores can be attached to a BAM module, which acts as a dma > > > engine for the QUP core. When DMA with BAM is enabled, the BAM > > > consumer > > pipe > > > transmitted data is written to the output FIFO and the BAM producer > > > pipe received data is read from the input FIFO. > > > > > > With BAM capabilities, qup-i2c core can transfer more than > > > 256 bytes, without a 'stop' which is not possible otherwise. > > > > > > Signed-off-by: Sricharan R <sricharan@xxxxxxxxxxxxxx> > > > Reviewed-by: Andy Gross <andy.gross@xxxxxxxxxx> > > > Tested-by: Archit Taneja <architt@xxxxxxxxxxxxxx> > > > Tested-by: Telkar Nagender <ntelkar@xxxxxxxxxxxxxx> > > > > My code checkers found some issues: > > > > SPARSE > > drivers/i2c/busses/i2c-qup.c:555:6: warning: symbol 'qup_sg_set_buf' > > was not declared. Should it be static? > > drivers/i2c/busses/i2c-qup.c:1243:50: warning: dubious: !x & !y > > SMATCH > > drivers/i2c/busses/i2c-qup.c:165 qup_sg_set_buf warn: unused return: s > > = > > sg_next() > > drivers/i2c/busses/i2c-qup.c:165 qup_sg_set_buf warn: unused return: s > > = > > sg_next() > > drivers/i2c/busses/i2c-qup.c:1243 qup_i2c_xfer_v2() warn: add some > > parenthesis here? > > CPPCHECK > > drivers/i2c/busses/i2c-qup.c:1243: style: Boolean result is used in > > bitwise operation. Clarify expression with parentheses. > > SPATCH > > drivers/i2c/busses/i2c-qup.c:1380:2-13: WARNING: Assignment of bool to > > 0/1 > > drivers/i2c/busses/i2c-qup.c:1481:1-13: WARNING: Assignment of bool to > 0/1 > > CC drivers/i2c/busses/i2c-qup.o > > drivers/i2c/busses/i2c-qup.c:555:6: warning: no previous prototype for > > 'qup_sg_set_buf' [-Wmissing-prototypes] void qup_sg_set_buf(struct > > scatterlist *sg, void *buf, struct qup_i2c_tag *tg, > > > > Can you fix them and resend?? > Really sorry for the delay , sent it here [1] Also, while testing this series in one of a new platform, found that an additional Regression and a fix is required on top of this series. So can I send a separate fix on top of this series ? [1] https://patchwork.ozlabs.org/patch/586125/ Regards, Sricharan -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
