| Message ID | 20210607131442.20121-3-heikki.krogerus@linux.intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | usb: typec: ucsi: Polling the alt modes and PDOs | expand |
Hello! On 07.06.2021 16:14, Heikki Krogerus wrote: > If the PPM tells it's busy, we can now simply try again. > > Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> > --- > drivers/usb/typec/ucsi/ucsi.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c > index 366c8a468bc18..a8e0e31dcddf5 100644 > --- a/drivers/usb/typec/ucsi/ucsi.c > +++ b/drivers/usb/typec/ucsi/ucsi.c > @@ -437,8 +437,11 @@ static int ucsi_register_altmodes(struct ucsi_connector *con, u8 recipient) > command |= UCSI_GET_ALTMODE_CONNECTOR_NUMBER(con->num); > command |= UCSI_GET_ALTMODE_OFFSET(i); > len = ucsi_send_command(con->ucsi, command, alt, sizeof(alt)); Could insert your check here, to reduce the indentation... > - if (len <= 0) > + if (len <= 0) { > + if (len == -EBUSY) > + continue; > return len; > + } > > /* > * This code is requesting one alt mode at a time, but some PPMs MBR, Sergei
On Tue, Jun 08, 2021 at 12:31:45PM +0300, Sergei Shtylyov wrote: > Hello! > > On 07.06.2021 16:14, Heikki Krogerus wrote: > > > If the PPM tells it's busy, we can now simply try again. > > > > Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> > > --- > > drivers/usb/typec/ucsi/ucsi.c | 5 ++++- > > 1 file changed, 4 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c > > index 366c8a468bc18..a8e0e31dcddf5 100644 > > --- a/drivers/usb/typec/ucsi/ucsi.c > > +++ b/drivers/usb/typec/ucsi/ucsi.c > > @@ -437,8 +437,11 @@ static int ucsi_register_altmodes(struct ucsi_connector *con, u8 recipient) > > command |= UCSI_GET_ALTMODE_CONNECTOR_NUMBER(con->num); > > command |= UCSI_GET_ALTMODE_OFFSET(i); > > len = ucsi_send_command(con->ucsi, command, alt, sizeof(alt)); > > Could insert your check here, to reduce the indentation... Sure thing. > > - if (len <= 0) > > + if (len <= 0) { > > + if (len == -EBUSY) > > + continue; > > return len; > > + } > > /* > > * This code is requesting one alt mode at a time, but some PPMs thanks,
diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 366c8a468bc18..a8e0e31dcddf5 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -437,8 +437,11 @@ static int ucsi_register_altmodes(struct ucsi_connector *con, u8 recipient) command |= UCSI_GET_ALTMODE_CONNECTOR_NUMBER(con->num); command |= UCSI_GET_ALTMODE_OFFSET(i); len = ucsi_send_command(con->ucsi, command, alt, sizeof(alt)); - if (len <= 0) + if (len <= 0) { + if (len == -EBUSY) + continue; return len; + } /* * This code is requesting one alt mode at a time, but some PPMs
If the PPM tells it's busy, we can now simply try again. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> --- drivers/usb/typec/ucsi/ucsi.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)