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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-09-07 17:37:28 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-09-07 17:37:28 +0200 |
| commit | 5eccd39d8efa3bc8d557be50f202bbf023837eed (patch) | |
| tree | 6f1589cd863481a7dfdace2b9a692957dc94afbe /drivers/mailbox | |
| parent | 8fb649f3a174efaa618928cbe0737bf78b456eed (diff) | |
| parent | 5015d0d945b3d3f2b038d2667880d5762f7d9437 (diff) | |
| download | linux-rolling-stable.tar.gz linux-rolling-stable.zip | |
Merge v7.2.4linux-rolling-stable
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/mailbox')
| -rw-r--r-- | drivers/mailbox/qcom-ipcc.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/mailbox/qcom-ipcc.c b/drivers/mailbox/qcom-ipcc.c index d957d989c0ce..dead907aa7a2 100644 --- a/drivers/mailbox/qcom-ipcc.c +++ b/drivers/mailbox/qcom-ipcc.c @@ -167,7 +167,7 @@ static struct mbox_chan *qcom_ipcc_mbox_xlate(struct mbox_controller *mbox, { struct qcom_ipcc *ipcc = to_qcom_ipcc(mbox); struct qcom_ipcc_chan_info *mchan; - struct mbox_chan *chan; + struct mbox_chan *chan, *free_chan = NULL; struct device *dev; int chan_id; @@ -180,16 +180,21 @@ static struct mbox_chan *qcom_ipcc_mbox_xlate(struct mbox_controller *mbox, chan = &ipcc->chans[chan_id]; mchan = chan->con_priv; - if (!mchan) - break; - else if (mchan->client_id == ph->args[0] && - mchan->signal_id == ph->args[1]) + if (!mchan) { + /* Keep scanning past holes to reject duplicate channel requests. */ + if (!free_chan) + free_chan = chan; + } else if (mchan->client_id == ph->args[0] && + mchan->signal_id == ph->args[1]) { return ERR_PTR(-EBUSY); + } } - if (chan_id >= mbox->num_chans) + if (!free_chan) return ERR_PTR(-EBUSY); + chan = free_chan; + mchan = devm_kzalloc(dev, sizeof(*mchan), GFP_KERNEL); if (!mchan) return ERR_PTR(-ENOMEM); |