It's safe to use sprintf() for simple cases in device_attr_show
type of functions. Add support for sprintf() in patch mode to
the device_attr_show.cocci script to print numbers and pointers.

Signed-off-by: Denis Efremov <efre...@linux.com>
---
Interesting enough that with this patch coccinelle starts to skip
patch generation in some cases. For example, it skips patch for
drivers/base/core.c This is an unexpected result for me.

 scripts/coccinelle/api/device_attr_show.cocci | 30 +++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/scripts/coccinelle/api/device_attr_show.cocci 
b/scripts/coccinelle/api/device_attr_show.cocci
index d8ec4bb8ac41..1248b8c76cfe 100644
--- a/scripts/coccinelle/api/device_attr_show.cocci
+++ b/scripts/coccinelle/api/device_attr_show.cocci
@@ -30,15 +30,45 @@ ssize_t show(struct device *dev, struct device_attribute 
*attr, char *buf)
 
 @rp depends on patch@
 identifier show, dev, attr, buf;
+constant str;
 @@
 
 ssize_t show(struct device *dev, struct device_attribute *attr, char *buf)
 {
        <...
+(
+       return
+-              snprintf
++              sprintf
+                       (buf,
+-                      \(PAGE_SIZE\|PAGE_SIZE - 1\),
+                       str);
+|
+       return
+-              snprintf
++              sprintf
+                       (buf,
+-                      \(PAGE_SIZE\|PAGE_SIZE - 1\),
+                       \("%i"\|"%i\n"\|"%li"\|"%li\n"\|"%lli"\|"%lli\n"\|
+                         "%d"\|"%d\n"\|"%ld"\|"%ld\n"\|"%lld"\|"%lld\n"\|
+                         "%u"\|"%u\n"\|"%lu"\|"%lu\n"\|"%llu"\|"%llu\n"\|
+                         "%x"\|"%x\n"\|"%lx"\|"%lx\n"\|"%llx"\|"%llx\n"\|
+                         "%X"\|"%X\n"\|"%lX"\|"%lX\n"\|"%llX"\|"%llX\n"\|
+                         
"0x%x"\|"0x%x\n"\|"0x%lx"\|"0x%lx\n"\|"0x%llx"\|"0x%llx\n"\|
+                         
"0x%X"\|"0x%X\n"\|"0x%lX"\|"0x%lX\n"\|"0x%llX"\|"0x%llX\n"\|
+                         "%02x\n"\|"%03x\n"\|"%04x\n"\|"%08x\n"\|
+                         "%02X\n"\|"%03X\n"\|"%04X\n"\|"%08X\n"\|
+                         "0x%02x\n"\|"0x%03x\n"\|"0x%04x\n"\|"0x%08x\n"\|
+                         "0x%02X\n"\|"0x%03X\n"\|"0x%04X\n"\|"0x%08X\n"\|
+                         "%zd"\|"%zd\n"\|"%zu"\|"%zu\n"\|"%zx"\|"%zx\n"\|
+                         
"%c"\|"%c\n"\|"%p"\|"%p\n"\|"%pU\n"\|"%pUl\n"\|"%hu\n"\),
+                       ...);
+|
        return
 -              snprintf
 +              scnprintf
                        (...);
+)
        ...>
 }
 
-- 
2.26.2

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