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Code Issues Releases Activity

Following test and bug fix code now works as intended on partial writes.

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This commit is contained in:
Robin Mallinson 2012-11-21 00:48:27 +00:00
parent b1bb608d4c
commit 983e36f7c1
2 changed files with 10 additions and 1 deletions
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11
ServoBlaster/servoblaster.c
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@ -415,12 +415,20 @@ static ssize_t dev_write(struct file *filp,const char *buf,size_t count,loff_t *
int* const idx = &(pdata->cmd_idx);
str = pdata->cmd_str;
printk(KERN_WARNING "ServoBlasterA: idx(%i),count(%u),max_idx (%i)\n",
*idx,count, max_idx
);
if ((*idx+count) > max_idx) count = max_idx-*idx;
if (copy_from_user(str, buf+*idx, count)) {
if (copy_from_user(str+*idx, buf, count)) {
return -EFAULT;
}
*idx+=count;
str[*idx] = '\0';
printk(KERN_WARNING "ServoBlasterB: idx(%i),count(%u),max_idx (%i) str(%s)EOS\n",
*idx, count, max_idx, str
);
end_of_line = strchr(str, '\n');
if (NULL == end_of_line)
{
@ -442,6 +450,7 @@ static ssize_t dev_write(struct file *filp,const char *buf,size_t count,loff_t *
int servo;
int cnt;
int n;
printk(KERN_WARNING "ServoBlasterc: str(%s)\n", str);
n = sscanf(str, "%d=%d", &servo, &cnt);
if (n != 2) {
printk(KERN_WARNING "ServoBlaster: Failed to parse command (n=%d)\n", n);

BIN
ServoBlaster/servoblaster.ko
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