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dma-debug: Cleanup for copy-loop in filter_write()
Earlier in this function we set the last byte of "buf" to NULL so we always hit the break statement and "i" is never equal to NAME_MAX_LEN. This patch doesn't change how the driver works but it silences a Smatch warning and it makes it clearer that we don't write past the end of the array. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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@ -570,7 +570,7 @@ static ssize_t filter_write(struct file *file, const char __user *userbuf,
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* Now parse out the first token and use it as the name for the
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* Now parse out the first token and use it as the name for the
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* driver to filter for.
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* driver to filter for.
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*/
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*/
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for (i = 0; i < NAME_MAX_LEN; ++i) {
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for (i = 0; i < NAME_MAX_LEN - 1; ++i) {
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current_driver_name[i] = buf[i];
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current_driver_name[i] = buf[i];
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if (isspace(buf[i]) || buf[i] == ' ' || buf[i] == 0)
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if (isspace(buf[i]) || buf[i] == ' ' || buf[i] == 0)
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break;
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break;
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