On Mon, Jul 29, 2019 at 06:03:45AM -0500, Gustavo A. R. Silva wrote: > Mark switch cases where we are expecting to fall through. > > This patch fixes the following warnings (Building: sparc defconfig): > > drivers/scsi/qlogicpti.c: In function 'qlogicpti_mbox_command': > drivers/scsi/qlogicpti.c:202:10: warning: this statement may fall through > [-Wimplicit-fallthrough=] > case 6: sbus_writew(param[5], qpti->qregs + MBOX5); > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/scsi/qlogicpti.c:203:2: note: here > case 5: sbus_writew(param[4], qpti->qregs + MBOX4); > ^~~~ > drivers/scsi/qlogicpti.c:203:10: warning: this statement may fall through > [-Wimplicit-fallthrough=] > case 5: sbus_writew(param[4], qpti->qregs + MBOX4); > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/scsi/qlogicpti.c:204:2: note: here > case 4: sbus_writew(param[3], qpti->qregs + MBOX3); > ^~~~ > drivers/scsi/qlogicpti.c:204:10: warning: this statement may fall through > [-Wimplicit-fallthrough=] > case 4: sbus_writew(param[3], qpti->qregs + MBOX3); > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/scsi/qlogicpti.c:205:2: note: here > case 3: sbus_writew(param[2], qpti->qregs + MBOX2); > ^~~~ > drivers/scsi/qlogicpti.c:205:10: warning: this statement may fall through > [-Wimplicit-fallthrough=] > case 3: sbus_writew(param[2], qpti->qregs + MBOX2); > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/scsi/qlogicpti.c:206:2: note: here > case 2: sbus_writew(param[1], qpti->qregs + MBOX1); > ^~~~ > drivers/scsi/qlogicpti.c:206:10: warning: this statement may fall through > [-Wimplicit-fallthrough=] > case 2: sbus_writew(param[1], qpti->qregs + MBOX1); > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/scsi/qlogicpti.c:207:2: note: here > case 1: sbus_writew(param[0], qpti->qregs + MBOX0); > ^~~~ > drivers/scsi/qlogicpti.c:256:19: warning: this statement may fall through > [-Wimplicit-fallthrough=] > case 6: param[5] = sbus_readw(qpti->qregs + MBOX5); > ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/scsi/qlogicpti.c:257:2: note: here > case 5: param[4] = sbus_readw(qpti->qregs + MBOX4); > ^~~~ > drivers/scsi/qlogicpti.c:257:19: warning: this statement may fall through > [-Wimplicit-fallthrough=] > case 5: param[4] = sbus_readw(qpti->qregs + MBOX4); > ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/scsi/qlogicpti.c:258:2: note: here > case 4: param[3] = sbus_readw(qpti->qregs + MBOX3); > ^~~~ > drivers/scsi/qlogicpti.c:258:19: warning: this statement may fall through > [-Wimplicit-fallthrough=] > case 4: param[3] = sbus_readw(qpti->qregs + MBOX3); > ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/scsi/qlogicpti.c:259:2: note: here > case 3: param[2] = sbus_readw(qpti->qregs + MBOX2); > ^~~~ > drivers/scsi/qlogicpti.c:259:19: warning: this statement may fall through > [-Wimplicit-fallthrough=] > case 3: param[2] = sbus_readw(qpti->qregs + MBOX2); > ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/scsi/qlogicpti.c:260:2: note: here > case 2: param[1] = sbus_readw(qpti->qregs + MBOX1); > ^~~~ > drivers/scsi/qlogicpti.c:260:19: warning: this statement may fall through > [-Wimplicit-fallthrough=] > case 2: param[1] = sbus_readw(qpti->qregs + MBOX1); > ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/scsi/qlogicpti.c:261:2: note: here > case 1: param[0] = sbus_readw(qpti->qregs + MBOX0); > ^~~~ > > Reported-by: Stephen Rothwell <[email protected]> > Signed-off-by: Gustavo A. R. Silva <[email protected]>
Reviewed-by: Kees Cook <[email protected]> -Kees > --- > drivers/scsi/qlogicpti.c | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/drivers/scsi/qlogicpti.c b/drivers/scsi/qlogicpti.c > index 9335849f6bea..d539beef3ce8 100644 > --- a/drivers/scsi/qlogicpti.c > +++ b/drivers/scsi/qlogicpti.c > @@ -200,10 +200,15 @@ static int qlogicpti_mbox_command(struct qlogicpti > *qpti, u_short param[], int f > /* Write mailbox command registers. */ > switch (mbox_param[param[0]] >> 4) { > case 6: sbus_writew(param[5], qpti->qregs + MBOX5); > + /* Fall through */ > case 5: sbus_writew(param[4], qpti->qregs + MBOX4); > + /* Fall through */ > case 4: sbus_writew(param[3], qpti->qregs + MBOX3); > + /* Fall through */ > case 3: sbus_writew(param[2], qpti->qregs + MBOX2); > + /* Fall through */ > case 2: sbus_writew(param[1], qpti->qregs + MBOX1); > + /* Fall through */ > case 1: sbus_writew(param[0], qpti->qregs + MBOX0); > } > > @@ -254,10 +259,15 @@ static int qlogicpti_mbox_command(struct qlogicpti > *qpti, u_short param[], int f > /* Read back output parameters. */ > switch (mbox_param[param[0]] & 0xf) { > case 6: param[5] = sbus_readw(qpti->qregs + MBOX5); > + /* Fall through */ > case 5: param[4] = sbus_readw(qpti->qregs + MBOX4); > + /* Fall through */ > case 4: param[3] = sbus_readw(qpti->qregs + MBOX3); > + /* Fall through */ > case 3: param[2] = sbus_readw(qpti->qregs + MBOX2); > + /* Fall through */ > case 2: param[1] = sbus_readw(qpti->qregs + MBOX1); > + /* Fall through */ > case 1: param[0] = sbus_readw(qpti->qregs + MBOX0); > } > > -- > 2.22.0 > -- Kees Cook
