On Wed, Mar 15, 2017 at 12:40 PM, Tobin C. Harding [off-list ref] wrote:

On Wed, Mar 15, 2017 at 12:01:39PM +0200, Alexander Kapshuk wrote:

quoted

On Wed, Mar 15, 2017 at 10:31 AM, Tobin C. Harding [off-list ref] wrote:

quoted

why does calling pr_debug() with more than one argument cause a sparse
warning?

drivers/mmc/core/sdio_io.c:70:9: error: unknown field name in initializer

sdio_io.c:70:
pr_debug("SDIO: Enabling device %s...\n", sdio_func_id(func));

What can we do about this?

thanks,
Tobin.

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What is the version of the sources you are using?

I'm usually working of gregKH's staging tree using branch staging-next
and/or staging-testing

thanks,
Tobin.

'sdio_func_id()' is a macro defined here:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/include/linux/mmc/sdio_func.h?id=refs/tags/v4.11-rc2
#define sdio_func_id(f) (dev_name(&(f)->dev))

The 'func' parameter passed into 'sdio_func_id()' is a pointer to
'struct device dev', which is a member of 'struct sdio_func' defined
here:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/include/linux/mmc/sdio_func.h?id=refs/tags/v4.11-rc2

Based on my understanding of the error message you got, the error must
lie in code that initialises 'func' to a field name of a struct that
isn't known at compile time.

At this stage, I'm not sure how to identify the code where the faulty
initialisation takes place.