Re: [PATCH] Need proper type casting before assignment, Remove compilation Warning.

From: David Miller
Date: Sat Jul 09 2016 - 18:06:54 EST

From: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>
Date: Fri, 8 Jul 2016 00:07:54 +0530

> -Return type of 'qe_muram_alloc' is 'unsigned long', That Was trying to
> assigned in ucc_fast_tx_virtual_fifo_base_offset and
> ucc_fast_rx_virtual_fifo_base_offset. These variable are 'unsigned int'.
> So before assginment need a proper type casting.
> -Passing value in IS_ERR_VALUE() is wrong, as they pass an 'int'
> into a function that takes an 'unsigned long' argument.This happens
> to work because the type is sign-extended on 64-bit architectures
> before it gets converted into an unsigned type.
> -Passing an 'unsigned short' or 'unsigned int'argument into
> IS_ERR_VALUE() is guaranteed to be broken, as are 8-bit integers
> and types that are wider than 'unsigned long'.
> -Any user will get compilation warning for that do not pass an
> unsigned long' argument.
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>

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[PATCH] ucc_geth: Need proper type ...