Certain protein kinase inhibitors

A compound of formula (I):

• or a pharmaceutically acceptable salt thereof, wherein:
• A-B is a 5-6 membered fused pyridone ring system, which is:
• W is
• R1 is selected from aryl, aryl-C1-4 alkyl, heteroaryl, and heteroaryl-C1-4 alkyl, wherein aryl and heteroaryl are each unsubstituted or substituted with at least one substituent independently selected from R6a;
• R2 is selected from hydrogen, C1-10 alkyl, C3-10 cycloalkyl, C3-10 cycloalkyl-C1-4 alkyl, heterocyclyl, and heterocyclyl-C1-4 alkyl, wherein alkyl, cycloalkyl, and heterocyclyl are each unsubstituted or substituted with at least one substituent independently selected from R6a;
• R3 is selected from hydrogen, C1-10 alkyl, and C3-10 cycloalkyl, wherein alkyl and cycloalkyl are each unsubstituted or substituted with at least one substituent independently selected from R6a;
• R4 is selected from hydrogen, halogen, cyano, C1-10 alkyl, C3-10 cycloalkyl, and C3-10 cycloalkyl-C1-4 alkyl, wherein alkyl and cycloalkyl are each unsubstituted or substituted with at least one substituent independently selected from R6a;
• each R5 is independently selected from hydrogen, halogen, CF3, C1-10 alkyl, and C3-10 cycloalkyl, wherein alkyl and cycloalkyl are each unsubstituted or substituted with at least one substituent independently selected from R6a;
• each R6a is independently selected from C1-10 alkyl, C3-10 cycloalkyl, C3-10 cycloalkyl-C1-4 alkyl, OR8, NO2, halogen, SR8, NR7R8, and CN;
• each R7 and each R8 are independently selected from hydrogen and C1-10 alkyl;
• m is independently selected from 0, 1, and 2.