On 11/1/17 4:08 AM, Vinod Koul wrote:
On Wed, Nov 01, 2017 at 02:49:15AM +0530, Pierre-Louis Bossart wrote:
+ if (found == false) {
+ /* TODO: Park this device in Group 13 */
+ dev_err(bus->dev, "Slave Entry not found");
No break here? Otherwise...
Thats intentional. We want to still read next device that show up
+ }
+
+ } while (ret == 0);
... the outer loop may go endlessly.
This condition doesn't look effective.
not really. We cant keep reading successfully. At some point all slaves will
ignore and return ENODATA and we exit. Bus errors will also make it exit
BUT given that we have seen stuff i am inclined to add a counter, we cant
have more than 11 device so that's a sane value to use :)
Yep. Keep in mind however that there could be theoretical corner cases: if a
device is enumerated, loses sync and becomes attached again while you deal
with others, you'd have more than 11 iterations.
Not really as that would be another interrupt and another status report.
You are in a loop where you keep reading the devId registers, and that
really has nothing to do with interrupts or status report. The point was
that the number of times you read may be higher that the number of
devices with a device being handled several times.
As mentioned above you need to limit this loop to a sane value.
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