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SubjectRe: [PATCH] aic7xxx large integer
On Sun, 2004-12-05 at 00:16 +0100, Miguel Angel Flores wrote:

> I post the patch very quickly :(. The original code finally seems OK. My
> controller is not working with 39 bit addressing, although I can't find
> why the compiler warns. Maybe the length of dma_addr_t type, in the
> 2.6.9 the type of the mask_39bit variable is bus_addr_t.

The compiler warns because you are putting a 64-bit value (an unsigned
long long) in a 32-bit value (a u32).

There is definitely a problem on non-highmem compiled kernels, there is
no doubt of that. The concern was that your suggested fix is not right.

Assuming that a 39-bit value is really wanted, the type either needs to
be changed to a dma64_addr_t or the value needs to change at
compile-time to a suitable 32-bit variant when !CONFIG_HIGHMEM64G.

Without knowing what the driver is doing, I have no idea.

Robert Love

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