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DEVRES_GET(9) Driver Basics DEVRES_GET(9)

NAME

devres_get - Find devres, if non-existent, add one atomically

SYNOPSIS

void * devres_get(struct device * dev, void * new_res, dr_match_t match, void * match_data);

ARGUMENTS

dev
Device to lookup or add devres for
new_res
Pointer to new initialized devres to add if not found
match
Match function (optional)
match_data
Data for the match function

DESCRIPTION

Find the latest devres of dev which has the same release function as new_res and for which match return 1. If found, new_res is freed; otherwise, new_res is added atomically.

RETURN

Pointer to found or added devres.

COPYRIGHT

January 2017 Kernel Hackers Manual 4.8.