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authorStefan Richter <stefanr@s5r6.in-berlin.de>2008-03-11 21:22:26 +0100
committerStefan Richter <stefanr@s5r6.in-berlin.de>2008-04-18 17:55:34 +0200
commit43286568adb3ccd4b2f1d0cb7393c355f03e4f39 (patch)
tree17316d441def72d84e94d59df2dd83c88e6b0a16 /drivers
parentad3c0fe8b8d1656a56ce2ef05ed5ccba790b4566 (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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/firewire/fw-ohci.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c
index b564b1aae52..533788f227d 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);