Messages in this thread | | | Date | Mon, 5 Oct 2015 00:58:59 +0800 | From | kbuild test robot <> | Subject | Re: [PATCH v1 2/3] uio_pci_generic: add MSI/MSI-X support |
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Hi Vlad,
[auto build test results on v4.3-rc3 -- if it's inappropriate base, please ignore]
config: xtensa-allyesconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=xtensa
All error/warnings (new ones prefixed by >>):
drivers/uio/uio_pci_generic.c: In function 'uio_pci_generic_ioctl': >> drivers/uio/uio_pci_generic.c:189:3: error: implicit declaration of function 'copy_from_user' [-Werror=implicit-function-declaration] if (copy_from_user(&hdr, (void __user *)arg, sizeof(hdr))) ^ >> drivers/uio/uio_pci_generic.c:208:4: error: implicit declaration of function 'put_user' [-Werror=implicit-function-declaration] err = put_user(0, (u32 __user *)arg); ^ cc1: some warnings being treated as errors
vim +/copy_from_user +189 drivers/uio/uio_pci_generic.c
183 struct uio_pci_generic_dev *gdev = to_uio_pci_generic_dev(info); 184 struct uio_pci_generic_irq_set hdr; 185 int err; 186 187 switch (cmd) { 188 case UIO_PCI_GENERIC_IRQ_SET: > 189 if (copy_from_user(&hdr, (void __user *)arg, sizeof(hdr))) 190 return -EFAULT; 191 192 /* Locking is needed to ensure two things: 193 * 1) Two IRQ_SET ioctl()'s are not running in parallel. 194 * 2) IRQ_SET ioctl() is not running in parallel with remove(). 195 */ 196 mutex_lock(&gdev->msix_state_lock); 197 if (gdev->int_mode != UIO_INT_MODE_MSIX) { 198 mutex_unlock(&gdev->msix_state_lock); 199 return -EOPNOTSUPP; 200 } 201 202 err = set_irq_eventfd(gdev, hdr.vec, hdr.fd); 203 mutex_unlock(&gdev->msix_state_lock); 204 205 break; 206 case UIO_PCI_GENERIC_IRQ_NUM_GET: 207 if (gdev->int_mode == UIO_INT_MODE_NONE) > 208 err = put_user(0, (u32 __user *)arg); 209 else if (gdev->int_mode != UIO_INT_MODE_MSIX) 210 err = put_user(1, (u32 __user *)arg); 211 else
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