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CHECK drivers/net/wan/fsl_ucc_hdlc.c drivers/net/wan/fsl_ucc_hdlc.c:309:57: warning: incorrect type in argument 2 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:309:57: expected void [noderef] __iomem * drivers/net/wan/fsl_ucc_hdlc.c:309:57: got restricted __be16 * drivers/net/wan/fsl_ucc_hdlc.c:311:46: warning: incorrect type in argument 2 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:311:46: expected void [noderef] __iomem * drivers/net/wan/fsl_ucc_hdlc.c:311:46: got restricted __be32 * drivers/net/wan/fsl_ucc_hdlc.c:320:57: warning: incorrect type in argument 2 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:320:57: expected void [noderef] __iomem * drivers/net/wan/fsl_ucc_hdlc.c:320:57: got restricted __be16 * drivers/net/wan/fsl_ucc_hdlc.c:322:46: warning: incorrect type in argument 2 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:322:46: expected void [noderef] __iomem * drivers/net/wan/fsl_ucc_hdlc.c:322:46: got restricted __be32 * drivers/net/wan/fsl_ucc_hdlc.c:372:29: warning: incorrect type in assignment (different base types) drivers/net/wan/fsl_ucc_hdlc.c:372:29: expected unsigned short [usertype] drivers/net/wan/fsl_ucc_hdlc.c:372:29: got restricted __be16 [usertype] drivers/net/wan/fsl_ucc_hdlc.c:379:36: warning: restricted __be16 degrades to integer drivers/net/wan/fsl_ucc_hdlc.c:402:12: warning: incorrect type in assignment (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:402:12: expected struct qe_bd [noderef] __iomem *bd drivers/net/wan/fsl_ucc_hdlc.c:402:12: got struct qe_bd *curtx_bd drivers/net/wan/fsl_ucc_hdlc.c:425:20: warning: incorrect type in assignment (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:425:20: expected struct qe_bd [noderef] __iomem *[assigned] bd drivers/net/wan/fsl_ucc_hdlc.c:425:20: got struct qe_bd *tx_bd_base drivers/net/wan/fsl_ucc_hdlc.c:427:16: error: incompatible types in comparison expression (different address spaces): drivers/net/wan/fsl_ucc_hdlc.c:427:16: struct qe_bd [noderef] __iomem * drivers/net/wan/fsl_ucc_hdlc.c:427:16: struct qe_bd * drivers/net/wan/fsl_ucc_hdlc.c:462:33: warning: incorrect type in argument 1 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:506:41: warning: incorrect type in argument 1 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:528:33: warning: incorrect type in argument 1 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:552:38: warning: incorrect type in argument 1 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:596:67: warning: incorrect type in argument 2 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:611:41: warning: incorrect type in argument 1 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:851:38: warning: incorrect type in initializer (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:854:40: warning: incorrect type in argument 1 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:855:40: warning: incorrect type in argument 1 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:858:39: warning: incorrect type in argument 1 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:861:37: warning: incorrect type in argument 2 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:866:38: warning: incorrect type in initializer (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:868:21: warning: incorrect type in argument 1 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:870:40: warning: incorrect type in argument 2 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:871:40: warning: incorrect type in argument 2 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:873:39: warning: incorrect type in argument 2 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:993:57: warning: incorrect type in argument 2 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:995:46: warning: incorrect type in argument 2 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:1004:57: warning: incorrect type in argument 2 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:1006:46: warning: incorrect type in argument 2 (different address spaces) drivers/net/wan/fsl_ucc_hdlc.c:412:35: warning: dereference of noderef expression drivers/net/wan/fsl_ucc_hdlc.c:412:35: warning: dereference of noderef expression drivers/net/wan/fsl_ucc_hdlc.c:724:29: warning: dereference of noderef expression drivers/net/wan/fsl_ucc_hdlc.c:815:21: warning: dereference of noderef expression drivers/net/wan/fsl_ucc_hdlc.c:1021:29: warning: dereference of noderef expression Most of the warnings are due to DMA memory being incorrectly handled as IO memory. Fix it by doing direct read/write and doing proper dma_rmb() / dma_wmb(). Other problems are type mismatches or lack of use of IO accessors. Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Reported-by: kernel test robot <lkp@intel.com> Link: https://lkml.org/lkml/2021/11/12/647 Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.