Add scripts/coccinelle/err_cast.cocci

Add a Coccinelle file to use the ERR_CAST function

Before the release 2.6.25, one had to use ERR_PTR(PTR_ERR(...))  to
convert the pointer type of an error. Since then, the function
ERR_CAST has been available for that purpose.

Signed-off-by: Nicolas Palix <[email protected]>
Signed-off-by: Julia Lawall <[email protected]>
Signed-off-by: Michal Marek <[email protected]>
1 file changed