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NFC: digital: Call pending command callbacks at device unregister

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With this patch, when freeing the command queue in the module unregister
function, the callbacks of the commands still queued are called with a
ENODEV error. This gives a chance to the command issuer to free any
memory it could have allocate.

Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Thierry Escande 2016-06-16 20:24:43 +02:00 committed by Samuel Ortiz
parent 3f89fea35f
commit 82e5795286
1 changed files with 8 additions and 0 deletions
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8
net/nfc/digital_core.c
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@ -842,6 +842,14 @@ void nfc_digital_unregister_device(struct nfc_digital_dev *ddev)
list_for_each_entry_safe(cmd, n, &ddev->cmd_queue, queue) {
list_del(&cmd->queue);
/* Call the command callback if any and pass it a ENODEV error.
* This gives a chance to the command issuer to free any
* allocated buffer.
*/
if (cmd->cmd_cb)
cmd->cmd_cb(ddev, cmd->cb_context, ERR_PTR(-ENODEV));
kfree(cmd->mdaa_params);
kfree(cmd);
}