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Subjectdrivers/net/wireless/intel/iwlwifi/fw/uefi.c:51:14: warning: format specifies type 'ssize_t' (aka 'int') but the argument has type 'unsigned long'
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ff1176468d368232b684f75e82563369208bc371
commit: 84c3c9952afbf7df39937095aa0ad70b58703e91 iwlwifi: move UEFI code to a separate file
date: 5 weeks ago
config: arm-randconfig-r002-20210726 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project c63dbd850182797bc4b76124d08e1c320ab2365d)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm cross compiling tool for clang build
# apt-get install binutils-arm-linux-gnueabi
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=84c3c9952afbf7df39937095aa0ad70b58703e91
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 84c3c9952afbf7df39937095aa0ad70b58703e91
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/net/wireless/intel/iwlwifi/fw/uefi.c:51:14: warning: format specifies type 'ssize_t' (aka 'int') but the argument has type 'unsigned long' [-Wformat]
err, package_size);
^~~~~~~~~~~~
drivers/net/wireless/intel/iwlwifi/iwl-debug.h:184:64: note: expanded from macro 'IWL_DEBUG_FW'
#define IWL_DEBUG_FW(p, f, a...) IWL_DEBUG(p, IWL_DL_FW, f, ## a)
~ ^
drivers/net/wireless/intel/iwlwifi/iwl-debug.h:88:49: note: expanded from macro 'IWL_DEBUG'
__IWL_DEBUG_DEV((m)->dev, level, false, fmt, ##args)
~~~ ^~~~
drivers/net/wireless/intel/iwlwifi/iwl-debug.h:85:49: note: expanded from macro '__IWL_DEBUG_DEV'
__iwl_dbg(dev, level, limit, __func__, fmt, ##args); \
~~~ ^~~~
drivers/net/wireless/intel/iwlwifi/fw/uefi.c:57:61: warning: format specifies type 'ssize_t' (aka 'int') but the argument has type 'unsigned long' [-Wformat]
IWL_DEBUG_FW(trans, "Read PNVM from UEFI with size %zd\n", package_size);
~~~ ^~~~~~~~~~~~
%lu
drivers/net/wireless/intel/iwlwifi/iwl-debug.h:184:64: note: expanded from macro 'IWL_DEBUG_FW'
#define IWL_DEBUG_FW(p, f, a...) IWL_DEBUG(p, IWL_DL_FW, f, ## a)
~ ^
drivers/net/wireless/intel/iwlwifi/iwl-debug.h:88:49: note: expanded from macro 'IWL_DEBUG'
__IWL_DEBUG_DEV((m)->dev, level, false, fmt, ##args)
~~~ ^~~~
drivers/net/wireless/intel/iwlwifi/iwl-debug.h:85:49: note: expanded from macro '__IWL_DEBUG_DEV'
__iwl_dbg(dev, level, limit, __func__, fmt, ##args); \
~~~ ^~~~
2 warnings generated.


vim +51 drivers/net/wireless/intel/iwlwifi/fw/uefi.c

13
14 #define IWL_EFI_VAR_GUID EFI_GUID(0x92daaf2f, 0xc02b, 0x455b, \
15 0xb2, 0xec, 0xf5, 0xa3, \
16 0x59, 0x4f, 0x4a, 0xea)
17
18 void *iwl_uefi_get_pnvm(struct iwl_trans *trans, size_t *len)
19 {
20 struct efivar_entry *pnvm_efivar;
21 void *data;
22 unsigned long package_size;
23 int err;
24
25 pnvm_efivar = kzalloc(sizeof(*pnvm_efivar), GFP_KERNEL);
26 if (!pnvm_efivar)
27 return ERR_PTR(-ENOMEM);
28
29 memcpy(&pnvm_efivar->var.VariableName, IWL_UEFI_OEM_PNVM_NAME,
30 sizeof(IWL_UEFI_OEM_PNVM_NAME));
31 pnvm_efivar->var.VendorGuid = IWL_EFI_VAR_GUID;
32
33 /*
34 * TODO: we hardcode a maximum length here, because reading
35 * from the UEFI is not working. To implement this properly,
36 * we have to call efivar_entry_size().
37 */
38 package_size = IWL_HARDCODED_PNVM_SIZE;
39
40 data = kmalloc(package_size, GFP_KERNEL);
41 if (!data) {
42 data = ERR_PTR(-ENOMEM);
43 *len = 0;
44 goto out;
45 }
46
47 err = efivar_entry_get(pnvm_efivar, NULL, &package_size, data);
48 if (err) {
49 IWL_DEBUG_FW(trans,
50 "PNVM UEFI variable not found %d (len %zd)\n",
> 51 err, package_size);

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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