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SubjectRe: [PATCH v3 7/7] dma-buf: system_heap: Add a system-uncached heap re-using the system heap
Hi John,

url: https://github.com/0day-ci/linux/commits/John-Stultz/dma-buf-Performance-improvements-for-system-heap-a-system-uncached-implementation/20201003-120520
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git bcf876870b95592b52519ed4aafcf9d95999bc9c
config: i386-randconfig-m021-20201002 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0

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

smatch warnings:
drivers/dma-buf/heaps/system_heap.c:496 system_heap_create() warn: passing zero to 'PTR_ERR'

vim +/PTR_ERR +496 drivers/dma-buf/heaps/system_heap.c

efa04fefebbd724 John Stultz 2019-12-03 478 static int system_heap_create(void)
efa04fefebbd724 John Stultz 2019-12-03 479 {
efa04fefebbd724 John Stultz 2019-12-03 480 struct dma_heap_export_info exp_info;
efa04fefebbd724 John Stultz 2019-12-03 481
263e38f82cbb35b Andrew F. Davis 2019-12-16 482 exp_info.name = "system";
efa04fefebbd724 John Stultz 2019-12-03 483 exp_info.ops = &system_heap_ops;
efa04fefebbd724 John Stultz 2019-12-03 484 exp_info.priv = NULL;
efa04fefebbd724 John Stultz 2019-12-03 485
efa04fefebbd724 John Stultz 2019-12-03 486 sys_heap = dma_heap_add(&exp_info);
efa04fefebbd724 John Stultz 2019-12-03 487 if (IS_ERR(sys_heap))
a2e10cdd2e4d12a John Stultz 2020-10-03 488 return PTR_ERR(sys_heap);
efa04fefebbd724 John Stultz 2019-12-03 489
553f4e0fafc5b3b John Stultz 2020-10-03 490 exp_info.name = "system-uncached";
553f4e0fafc5b3b John Stultz 2020-10-03 491 exp_info.ops = &system_uncached_heap_ops;
553f4e0fafc5b3b John Stultz 2020-10-03 492 exp_info.priv = NULL;
553f4e0fafc5b3b John Stultz 2020-10-03 493
553f4e0fafc5b3b John Stultz 2020-10-03 494 sys_uncached_heap = dma_heap_add(&exp_info);
553f4e0fafc5b3b John Stultz 2020-10-03 495 if (IS_ERR(sys_uncached_heap))
553f4e0fafc5b3b John Stultz 2020-10-03 @496 return PTR_ERR(sys_heap);
^^^^^^^^^^^^^^^^^
This should be return PTR_ERR(sys_uncached_heap);


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