qemu/0227-dev-smartcard-reader-remove-aborts-never-triggered-b.patch

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From 3ea945e317cfda37503bccc6c0548f7bebdb5ba3 Mon Sep 17 00:00:00 2001
From: Alon Levy <alevy@redhat.com>
Date: Mon, 4 Mar 2013 18:55:07 +0200
Subject: [PATCH] dev-smartcard-reader: remove aborts (never triggered, but
just in case)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: Alon Levy <alevy@redhat.com>
Reviewed-by: Marc-André Lureau <mlureau@redhat.com>
(cherry picked from commit 47bf53af7507986fc473cb308324340448fd85e7)
---
hw/usb/dev-smartcard-reader.c | 20 ++++++++++++--------
1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/hw/usb/dev-smartcard-reader.c b/hw/usb/dev-smartcard-reader.c
index 173dcc9..54ea536 100644
--- a/hw/usb/dev-smartcard-reader.c
+++ b/hw/usb/dev-smartcard-reader.c
@@ -796,6 +796,12 @@ static void ccid_write_data_block(USBCCIDState *s, uint8_t slot, uint8_t seq,
ccid_reset_error_status(s);
}
+static void ccid_report_error_failed(USBCCIDState *s, uint8_t error)
+{
+ s->bmCommandStatus = COMMAND_STATUS_FAILED;
+ s->bError = error;
+}
+
static void ccid_write_data_block_answer(USBCCIDState *s,
const uint8_t *data, uint32_t len)
{
@@ -803,7 +809,9 @@ static void ccid_write_data_block_answer(USBCCIDState *s,
uint8_t slot;
if (!ccid_has_pending_answers(s)) {
- abort();
+ DPRINTF(s, D_WARN, "error: no pending answer to return to guest\n");
+ ccid_report_error_failed(s, ERROR_ICC_MUTE);
+ return;
}
ccid_remove_pending_answer(s, &slot, &seq);
ccid_write_data_block(s, slot, seq, data, len);
@@ -857,12 +865,6 @@ static void ccid_reset_parameters(USBCCIDState *s)
memcpy(s->abProtocolDataStructure, abDefaultProtocolDataStructure, len);
}
-static void ccid_report_error_failed(USBCCIDState *s, uint8_t error)
-{
- s->bmCommandStatus = COMMAND_STATUS_FAILED;
- s->bError = error;
-}
-
/* NOTE: only a single slot is supported (SLOT_0) */
static void ccid_on_slot_change(USBCCIDState *s, bool full)
{
@@ -1129,7 +1131,9 @@ void ccid_card_send_apdu_to_guest(CCIDCardState *card,
s->bmCommandStatus = COMMAND_STATUS_NO_ERROR;
answer = ccid_peek_next_answer(s);
if (answer == NULL) {
- abort();
+ DPRINTF(s, D_WARN, "%s: error: unexpected lack of answer\n", __func__);
+ ccid_report_error_failed(s, ERROR_HW_ERROR);
+ return;
}
DPRINTF(s, 1, "APDU returned to guest %d (answer seq %d, slot %d)\n",
len, answer->seq, answer->slot);