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| author | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2008-03-11 21:22:26 +0100 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2008-04-18 17:55:34 +0200 |
| commit | 43286568adb3ccd4b2f1d0cb7393c355f03e4f39 (patch) | |
| tree | 17316d441def72d84e94d59df2dd83c88e6b0a16 | |
| parent | ad3c0fe8b8d1656a56ce2ef05ed5ccba790b4566 (diff) | |
firewire: fw-ohci: untangle a mixed unsigned/signed expression
and make another expression more readable.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| -rw-r--r-- | drivers/firewire/fw-ohci.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c index b564b1aae52f..533788f227dc 100644 --- a/drivers/firewire/fw-ohci.c +++ b/drivers/firewire/fw-ohci.c @@ -494,6 +494,7 @@ static __le32 *handle_ar_packet(struct ar_context *ctx, __le32 *buffer) struct fw_ohci *ohci = ctx->ohci; struct fw_packet p; u32 status, length, tcode; + int evt; p.header[0] = cond_le32_to_cpu(buffer[0]); p.header[1] = cond_le32_to_cpu(buffer[1]); @@ -536,13 +537,14 @@ static __le32 *handle_ar_packet(struct ar_context *ctx, __le32 *buffer) /* FIXME: What to do about evt_* errors? */ length = (p.header_length + p.payload_length + 3) / 4; status = cond_le32_to_cpu(buffer[length]); + evt = (status >> 16) & 0x1f; - p.ack = ((status >> 16) & 0x1f) - 16; + p.ack = evt - 16; p.speed = (status >> 21) & 0x7; p.timestamp = status & 0xffff; p.generation = ohci->request_generation; - log_ar_at_event('R', p.speed, p.header, status >> 16 & 0x1f); + log_ar_at_event('R', p.speed, p.header, evt); /* * The OHCI bus reset handler synthesizes a phy packet with @@ -554,7 +556,7 @@ static __le32 *handle_ar_packet(struct ar_context *ctx, __le32 *buffer) * request. */ - if (p.ack + 16 == 0x09) + if (evt == OHCI1394_evt_bus_reset) ohci->request_generation = (p.header[2] >> 16) & 0xff; else if (ctx == &ohci->ar_request_ctx) fw_core_handle_request(&ohci->card, &p); |