Le 21/01/2020 à 07:59, 王文虎 a écrit :
发件人:Andrew Donnellan <[email protected]>
发送日期:2020-01-21 14:13:07
收件人:wangwenhu <[email protected]>,Benjamin Herrenschmidt <[email protected]>,Paul Mackerras 
<[email protected]>,Michael Ellerman <[email protected]>,Kate Stewart <[email protected]>,Greg 
Kroah-Hartman <[email protected]>,Richard Fontana <[email protected]>,Thomas Gleixner 
<[email protected]>,[email protected],[email protected]
抄送人:[email protected],[email protected],[email protected]
主题:Re: [PATCH] powerpc/sysdev: fix compile errors>On 21/1/20 4:31 pm, wangwenhu 
wrote:
From: wangwenhu <[email protected]>

Include arch/powerpc/include/asm/io.h into fsl_85xx_cache_sram.c to
fix the implicit declaration compile errors when building Cache-Sram.

arch/powerpc/sysdev/fsl_85xx_cache_sram.c: In function ‘instantiate_cache_sram’:
arch/powerpc/sysdev/fsl_85xx_cache_sram.c:97:26: error: implicit declaration of 
function ‘ioremap_coherent’; did you mean ‘bitmap_complement’? 
[-Werror=implicit-function-declaration]
    cache_sram->base_virt = ioremap_coherent(cache_sram->base_phys,
                            ^~~~~~~~~~~~~~~~
                            bitmap_complement
arch/powerpc/sysdev/fsl_85xx_cache_sram.c:97:24: error: assignment makes 
pointer from integer without a cast [-Werror=int-conversion]
    cache_sram->base_virt = ioremap_coherent(cache_sram->base_phys,
                          ^
arch/powerpc/sysdev/fsl_85xx_cache_sram.c:123:2: error: implicit declaration of 
function ‘iounmap’; did you mean ‘roundup’? 
[-Werror=implicit-function-declaration]
    iounmap(cache_sram->base_virt);
    ^~~~~~~
    roundup
cc1: all warnings being treated as errors

Signed-off-by: wangwenhu <[email protected]>

How long has this code been broken for?

It's been broken almost 15 months since the commit below:
"commit aa91796ec46339f2ed53da311bd3ea77a3e4dfe1

Can you then add a Fixes: tag ?

Thanks
Christophe

Author: Christophe Leroy <[email protected]>
Date:   Tue Oct 9 13:51:41 2018 +0000

     powerpc: don't use ioremap_prot() nor __ioremap() unless really needed."

And we are working on it now for further development.


---
   arch/powerpc/sysdev/fsl_85xx_cache_sram.c | 1 +
   1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/sysdev/fsl_85xx_cache_sram.c 
b/arch/powerpc/sysdev/fsl_85xx_cache_sram.c
index f6c665dac725..29b6868eff7d 100644
--- a/arch/powerpc/sysdev/fsl_85xx_cache_sram.c
+++ b/arch/powerpc/sysdev/fsl_85xx_cache_sram.c
@@ -17,6 +17,7 @@
   #include <linux/of_platform.h>
   #include <asm/pgtable.h>
   #include <asm/fsl_85xx_cache_sram.h>
+#include <asm/io.h>

   #include "fsl_85xx_cache_ctlr.h"


--
Andrew Donnellan              OzLabs, ADL Canberra
[email protected]             IBM Australia Limited


Wenhu

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