Hi,
Thank-you for the review.
On 04/02/16 12:24, Aleksey Makarov wrote:
Hi Zubair,
+ void __iomem *base;
[..]
+ cfg = cvmx_read_csr((uint64_t)base + CVMX_SATA_UCTL_SHIM_CFG);
sparse will complain here. See Documentation/sparse.txt
Yes. sparse says
...
CHECK drivers/ata/sata_octeon.c
drivers/ata/sata_octeon.c:50:30: warning: cast removes address space of expression
drivers/ata/sata_octeon.c:65:25: warning: cast removes address space of expression
...
Use of (__force uint64_t) removes the sparse warning. But it was
frowned upon by arnd.
He suggested a wrapper helper in asm/octeon/cvmx.h which handles iomem
addresses and __force behind the scenes rather than in the driver.
static inline void cvmx_write_csr_resource(void __iomem *csr_addr, uint64_t val)
{
cvmx_write_csr((__force uint64_t)csr_addr, val)
}
Alternatives? Or should I resend with the above wrapper?
Regards,
ZubairLK
Thank you
Aleksey Makarov
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