Instead of using magic numbers, use structs that are more descriptive of
the fields being used.
Signed-off-by: Amit Shah <amit.s...@redhat.com>
---
hw/ide/core.c | 16 ++++++++++++++--
1 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/hw/ide/core.c b/hw/ide/core.c
index 5b64676..3fa2044 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -1088,11 +1088,23 @@ static void
handle_get_event_status_notification(IDEState *s,
uint8_t *buf,
const uint8_t *packet)
{
+ struct {
+ uint8_t opcode;
+ uint8_t polled; /* lsb bit is polled; others are reserved */
+ uint8_t reserved2[2];
+ uint8_t class;
+ uint8_t reserved3[2];
+ uint16_t len;
+ uint8_t control;
+ } __attribute__((packed)) *gesn_cdb;
+
unsigned int max_len;
- max_len = ube16_to_cpu(packet + 7);
+ gesn_cdb = (void *)packet;
+ max_len = be16_to_cpu(gesn_cdb->len);
- if (!(packet[1] & 0x01)) { /* asynchronous mode */
+ /* It is fine by the MMC spec to not support async mode operations */
+ if (!(gesn_cdb->polled & 0x01)) { /* asynchronous mode */
/* Only polling is supported, asynchronous mode is not. */
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
--
1.7.4.2
