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mpu6000: fixed race condition in buffer increment

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This commit is contained in:
Andrew Tridgell
2013-09-10 11:56:36 +02:00
committed by Lorenz Meier
parent c62710f80b
commit 4650c21141
1 changed files with 5 additions and 3 deletions
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src/drivers/mpu6000/mpu6000.cpp
+5 -3
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@@ -668,9 +668,10 @@ MPU6000::read(struct file *filp, char *buffer, size_t buflen)
_accel_report *arp = reinterpret_cast<_accel_report *>(buffer);
int transferred = 0;
while (count--) {
if (!_accel_reports->get(*arp++))
if (!_accel_reports->get(*arp))
break;
transferred++;
arp++;
}
/* return the number of bytes transferred */
@@ -758,12 +759,13 @@ MPU6000::gyro_read(struct file *filp, char *buffer, size_t buflen)
return -EAGAIN;
/* copy reports out of our buffer to the caller */
_gyro_report *arp = reinterpret_cast<_gyro_report *>(buffer);
_gyro_report *grp = reinterpret_cast<_gyro_report *>(buffer);
int transferred = 0;
while (count--) {
if (!_gyro_reports->get(*arp++))
if (!_gyro_reports->get(*grp))
break;
transferred++;
grp++;
}
/* return the number of bytes transferred */