Morrow had debridement surgery on his right shoulder on Wednesday in Los Angeles to repair an impingement.
Once the procedure began, no other work was needed, Morrow said, which was certainly viewed as a good thing.
"No other repairs, no anchor needed, just the debridement and cleanup," he said.
Morrow, who was limited to five starts this season, is now looking at a three- to four-month window of recovery before he can start playing catch again.
"I think it was a relatively straightforward procedure. He's going to be in a sling and start the recuperation process," said Padres assistant general manager Josh Stein. "But it went as planned and he's doing fine."
Morrow, who had a 2.73 ERA in his five starts and made $2.5 million, will be a free agent after the season. He last appeared in a game on May 2 and had two Minor League rehab stints cut short due to soreness in the shoulder before surgery was needed.
On Friday, Morrow expressed interest in coming back next season. He hopes the feeling is mutual.
"Definitely ...I hope to come back, for sure," Morrow said. "We're a ways away from a decision. But hopefully with the procedure going the way it did, they [Padres] are confident like I am that I'll be ready for the start of Spring Training."
Stein made it sound like the team would be receptive to talking with Morrow about a deal for 2016.
"He's had a good experience here. Unfortunately, he wasn't as healthy as we wanted him to be or as he wanted to be but having talked to him, he had a good experience here," Stein said.
"We acquired him knowing there was a risk of an injury. The contract was structured [one-year, $2.5 million] to take that into account. I wouldn't say there's not an opportunity for us to explore something similar moving forward."