The Saluki handle bar ears will always be prone to infection.
Get your vet to give you a prescription for canuaral.
If it keeps reacuring then you need to syringe the ears, with warm water (flushing) any good vet will teach you how to do this.
I have a bitch that gets ear infections a lot due to her twin bro licking her ears all the time, the first signs are that she starts knawing on her paws.
ATB Doug
Thanks mate..................chris