#include #include #include #include #include #include "xenfs.h" #include "../xenbus/xenbus_comms.h" static ssize_t xsd_read(struct file *file, char __user *buf, size_t size, loff_t *off) { const char *str = (const char *)file->private_data; return simple_read_from_buffer(buf, size, off, str, strlen(str)); } static int xsd_release(struct inode *inode, struct file *file) { kfree(file->private_data); return 0; } static int xsd_kva_open(struct inode *inode, struct file *file) { file->private_data = (void *)kasprintf(GFP_KERNEL, "0x%p", xen_store_interface); if (!file->private_data) return -ENOMEM; return 0; } static int xsd_kva_mmap(struct file *file, struct vm_area_struct *vma) { size_t size = vma->vm_end - vma->vm_start; if ((size > PAGE_SIZE) || (vma->vm_pgoff != 0)) return -EINVAL; if (remap_pfn_range(vma, vma->vm_start, virt_to_pfn(xen_store_interface), size, vma->vm_page_prot)) return -EAGAIN; return 0; } const struct file_operations xsd_kva_file_ops = { .open = xsd_kva_open, .mmap = xsd_kva_mmap, .read = xsd_read, .release = xsd_release, }; static int xsd_port_open(struct inode *inode, struct file *file) { file->private_data = (void *)kasprintf(GFP_KERNEL, "%d", xen_store_evtchn); if (!file->private_data) return -ENOMEM; return 0; } const struct file_operations xsd_port_file_ops = { .open = xsd_port_open, .read = xsd_read, .release = xsd_release, }; class='tabs'> summaryrefslogtreecommitdiff
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authorStanislaw Gruszka <sgruszka@redhat.com>2017-01-29 12:40:52 +0100
committerKalle Valo <kvalo@codeaurora.org>2017-01-31 09:08:52 +0200
commit33e962c8871f015f5c8978384553dddcf5b81b22 (patch)
tree43aff96c2ee21d9e0fa2018457778a4de52053cd /kernel/workqueue_internal.h
parent575ddce0507789bf9830d089557d2199d2f91865 (diff)
rt2x00: fix clk_get call
clk_get() takes two arguments and might return ERR_PTR(), so we have to nullify pointer on that case, to do not break further call to clk_get_rate(). Reported-by: Felix Fietkau <nbd@nbd.name> Fixes: 34db70b92fae ("rt2x00: add copy of clk for soc devices") Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'kernel/workqueue_internal.h')