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Update riscv-011.c 

Update comment and remove redundant check
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Megan Wachs 2018-01-02 12:02:02 -08:00 committed by GitHub
parent e36a16701d
commit bf22cae558
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1 changed files with 6 additions and 2 deletions
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src/target/riscv/riscv-011.c
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@ -455,7 +455,11 @@ static uint64_t dbus_read(struct target *target, uint16_t address)
dbus_status_t status;
uint16_t address_in;
// First, discard stale data
// First scan sends the desired address/operation. This is
// slightly inefficient as, if the previous read was to the same
// address, one could have simply used the data directly. However,
// that data may may have been captured significantly earlier,
// and could be considered stale at the start of this operation.
dbus_scan(target, &address_in, &value, DBUS_OP_READ, address, 0);
unsigned i = 0;
@ -463,7 +467,7 @@ static uint64_t dbus_read(struct target *target, uint16_t address)
status = dbus_scan(target, &address_in, &value, DBUS_OP_READ, address, 0);
if (status == DBUS_STATUS_BUSY)
increase_dbus_busy_delay(target);
} while (((status == DBUS_STATUS_BUSY) || (address_in != address)) &&
} while (((status == DBUS_STATUS_BUSY)) &&
i++ < 256);
if (status != DBUS_STATUS_SUCCESS)