Hi Douglas, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on mkp-scsi/for-next] [also build test WARNING on v5.3-rc1 next-20190723] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Douglas-Gilbert/sg-v4-interface-rq-sharing-multiple-rqs/20190525-161346 base: https://kernel.googlesource.com/pub/scm/linux/kernel/git/mkp/scsi.git for-next reproduce: # apt-get install sparse # sparse version: v0.6.1-rc1-7-g2b96cd8-dirty make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/scsi/sg.c:2808:20: sparse: sparse: incorrect type in initializer (different base types) @@ expected int gfp @@ got restricted gfp_t [usertyint gfp @@ >> drivers/scsi/sg.c:2808:20: sparse: expected int gfp >> drivers/scsi/sg.c:2808:20: sparse: got restricted gfp_t [usertype] >> drivers/scsi/sg.c:2811:51: sparse: sparse: restricted gfp_t degrades to integer >> drivers/scsi/sg.c:2811:49: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected restricted gfp_t [usertype] flags @@ got [usertype] flags @@ >> drivers/scsi/sg.c:2811:49: sparse: expected restricted gfp_t [usertype] flags >> drivers/scsi/sg.c:2811:49: sparse: got unsigned int drivers/scsi/sg.c:2813:51: sparse: sparse: restricted gfp_t degrades to integer drivers/scsi/sg.c:2813:49: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected restricted gfp_t [usertype] flags @@ got [usertype] flags @@ drivers/scsi/sg.c:2813:49: sparse: expected restricted gfp_t [usertype] flags drivers/scsi/sg.c:2813:49: sparse: got unsigned int include/linux/spinlock.h:393:9: sparse: sparse: context imbalance in 'sg_add_request' - different lock contexts for basic block vim +2808 drivers/scsi/sg.c 2797 2798 /* 2799 * Makes a new sg_request object. If 'first' is set then use GFP_KERNEL which 2800 * may take time but has improved chance of success, otherwise use GFP_ATOMIC. 2801 * Note that basic initialization is done but srp is not added to either sfp 2802 * list. On error returns twisted negated errno value (not NULL). 2803 */ 2804 static struct sg_request * 2805 sg_mk_srp(struct sg_fd *sfp, bool first) 2806 { 2807 struct sg_request *srp; > 2808 int gfp = __GFP_NOWARN; 2809 2810 if (first) /* prepared to wait if none already outstanding */ > 2811 srp = kzalloc(sizeof(*srp), gfp | GFP_KERNEL); 2812 else 2813 srp = kzalloc(sizeof(*srp), gfp | GFP_ATOMIC); 2814 if (srp) { 2815 spin_lock_init(&srp->req_lck); 2816 atomic_set(&srp->rq_st, SG_RS_INACTIVE); 2817 srp->parentfp = sfp; 2818 return srp; 2819 } else { 2820 return ERR_PTR(-ENOMEM); 2821 } 2822 } 2823 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
