devm_kstrdup — Allocate resource managed space and copy an existing string into that.
| char * devm_kstrdup ( | struct device * dev, | 
| const char * s, | |
| gfp_t gfp ); | 
devDevice to allocate memory for
sthe string to duplicate
gfp
     the GFP mask used in the devm_kmalloc call when
     allocating memory