summaryrefslogtreecommitdiffstats
path: root/drivers/misc
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2017-11-16 09:10:59 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-16 09:10:59 -0800
commit2bf16b7a73caf3435f782e4170cfe563675e10f9 (patch)
tree7f4c5b28a02f08c4d6fd69dd43db5872b07c20c4 /drivers/misc
parentb9743042b3d31fed271ae19aee79dd86817904f0 (diff)
parentf13d1a8a801dae552ef495c84a223280586a9f67 (diff)
downloadlinux-2bf16b7a73caf3435f782e4170cfe563675e10f9.tar.bz2
Merge tag 'char-misc-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc updates from Greg KH: "Here is the big set of char/misc and other driver subsystem patches for 4.15-rc1. There are small changes all over here, hyperv driver updates, pcmcia driver updates, w1 driver updats, vme driver updates, nvmem driver updates, and lots of other little one-off driver updates as well. The shortlog has the full details. All of these have been in linux-next for quite a while with no reported issues" * tag 'char-misc-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (90 commits) VME: Return -EBUSY when DMA list in use w1: keep balance of mutex locks and refcnts MAINTAINERS: Update VME subsystem tree. nvmem: sunxi-sid: add support for A64/H5's SID controller nvmem: imx-ocotp: Update module description nvmem: imx-ocotp: Enable i.MX7D OTP write support nvmem: imx-ocotp: Add i.MX7D timing write clock setup support nvmem: imx-ocotp: Move i.MX6 write clock setup to dedicated function nvmem: imx-ocotp: Add support for banked OTP addressing nvmem: imx-ocotp: Pass parameters via a struct nvmem: imx-ocotp: Restrict OTP write to IMX6 processors nvmem: uniphier: add UniPhier eFuse driver dt-bindings: nvmem: add description for UniPhier eFuse nvmem: set nvmem->owner to nvmem->dev->driver->owner if unset nvmem: qfprom: fix different address space warnings of sparse nvmem: mtk-efuse: fix different address space warnings of sparse nvmem: mtk-efuse: use stack for nvmem_config instead of malloc'ing it nvmem: imx-iim: use stack for nvmem_config instead of malloc'ing it thunderbolt: tb: fix use after free in tb_activate_pcie_devices MAINTAINERS: Add git tree for Thunderbolt development ...
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/altera-stapl/Kconfig3
-rw-r--r--drivers/misc/genwqe/card_base.h7
-rw-r--r--drivers/misc/genwqe/card_dev.c6
-rw-r--r--drivers/misc/genwqe/card_utils.c43
-rw-r--r--drivers/misc/lkdtm_core.c18
-rw-r--r--drivers/misc/mei/mei-trace.c1
-rw-r--r--drivers/misc/mei/mei-trace.h19
-rw-r--r--drivers/misc/mic/Kconfig4
8 files changed, 53 insertions, 48 deletions
diff --git a/drivers/misc/altera-stapl/Kconfig b/drivers/misc/altera-stapl/Kconfig
index 7f01d8e93992..8a828fe41fad 100644
--- a/drivers/misc/altera-stapl/Kconfig
+++ b/drivers/misc/altera-stapl/Kconfig
@@ -1,4 +1,5 @@
-comment "Altera FPGA firmware download module"
+comment "Altera FPGA firmware download module (requires I2C)"
+ depends on !I2C
config ALTERA_STAPL
tristate "Altera FPGA firmware download module"
diff --git a/drivers/misc/genwqe/card_base.h b/drivers/misc/genwqe/card_base.h
index 5813b5f25006..3743c87f8ab9 100644
--- a/drivers/misc/genwqe/card_base.h
+++ b/drivers/misc/genwqe/card_base.h
@@ -182,6 +182,7 @@ struct dma_mapping {
struct list_head card_list; /* list of usr_maps for card */
struct list_head pin_list; /* list of pinned memory for dev */
+ int write; /* writable map? useful in unmapping */
};
static inline void genwqe_mapping_init(struct dma_mapping *m,
@@ -189,6 +190,7 @@ static inline void genwqe_mapping_init(struct dma_mapping *m,
{
memset(m, 0, sizeof(*m));
m->type = type;
+ m->write = 1; /* Assume the maps we create are R/W */
}
/**
@@ -347,6 +349,7 @@ enum genwqe_requ_state {
* @user_size: size of user-space memory area
* @page: buffer for partial pages if needed
* @page_dma_addr: dma address partial pages
+ * @write: should we write it back to userspace?
*/
struct genwqe_sgl {
dma_addr_t sgl_dma_addr;
@@ -356,6 +359,8 @@ struct genwqe_sgl {
void __user *user_addr; /* user-space base-address */
size_t user_size; /* size of memory area */
+ int write;
+
unsigned long nr_pages;
unsigned long fpage_offs;
size_t fpage_size;
@@ -369,7 +374,7 @@ struct genwqe_sgl {
};
int genwqe_alloc_sync_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl,
- void __user *user_addr, size_t user_size);
+ void __user *user_addr, size_t user_size, int write);
int genwqe_setup_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl,
dma_addr_t *dma_list);
diff --git a/drivers/misc/genwqe/card_dev.c b/drivers/misc/genwqe/card_dev.c
index dd4617764f14..3ecfa35457e0 100644
--- a/drivers/misc/genwqe/card_dev.c
+++ b/drivers/misc/genwqe/card_dev.c
@@ -942,6 +942,10 @@ static int ddcb_cmd_fixups(struct genwqe_file *cfile, struct ddcb_requ *req)
genwqe_mapping_init(m,
GENWQE_MAPPING_SGL_TEMP);
+
+ if (ats_flags == ATS_TYPE_SGL_RD)
+ m->write = 0;
+
rc = genwqe_user_vmap(cd, m, (void *)u_addr,
u_size, req);
if (rc != 0)
@@ -954,7 +958,7 @@ static int ddcb_cmd_fixups(struct genwqe_file *cfile, struct ddcb_requ *req)
/* create genwqe style scatter gather list */
rc = genwqe_alloc_sync_sgl(cd, &req->sgls[i],
(void __user *)u_addr,
- u_size);
+ u_size, m->write);
if (rc != 0)
goto err_out;
diff --git a/drivers/misc/genwqe/card_utils.c b/drivers/misc/genwqe/card_utils.c
index 147b83011b58..5c0d917636f7 100644
--- a/drivers/misc/genwqe/card_utils.c
+++ b/drivers/misc/genwqe/card_utils.c
@@ -296,7 +296,7 @@ static int genwqe_sgl_size(int num_pages)
* from user-space into the cached pages.
*/
int genwqe_alloc_sync_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl,
- void __user *user_addr, size_t user_size)
+ void __user *user_addr, size_t user_size, int write)
{
int rc;
struct pci_dev *pci_dev = cd->pci_dev;
@@ -312,6 +312,7 @@ int genwqe_alloc_sync_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl,
sgl->user_addr = user_addr;
sgl->user_size = user_size;
+ sgl->write = write;
sgl->sgl_size = genwqe_sgl_size(sgl->nr_pages);
if (get_order(sgl->sgl_size) > MAX_ORDER) {
@@ -476,14 +477,20 @@ int genwqe_setup_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl,
int genwqe_free_sync_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl)
{
int rc = 0;
+ size_t offset;
+ unsigned long res;
struct pci_dev *pci_dev = cd->pci_dev;
if (sgl->fpage) {
- if (copy_to_user(sgl->user_addr, sgl->fpage + sgl->fpage_offs,
- sgl->fpage_size)) {
- dev_err(&pci_dev->dev, "[%s] err: copying fpage!\n",
- __func__);
- rc = -EFAULT;
+ if (sgl->write) {
+ res = copy_to_user(sgl->user_addr,
+ sgl->fpage + sgl->fpage_offs, sgl->fpage_size);
+ if (res) {
+ dev_err(&pci_dev->dev,
+ "[%s] err: copying fpage! (res=%lu)\n",
+ __func__, res);
+ rc = -EFAULT;
+ }
}
__genwqe_free_consistent(cd, PAGE_SIZE, sgl->fpage,
sgl->fpage_dma_addr);
@@ -491,12 +498,16 @@ int genwqe_free_sync_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl)
sgl->fpage_dma_addr = 0;
}
if (sgl->lpage) {
- if (copy_to_user(sgl->user_addr + sgl->user_size -
- sgl->lpage_size, sgl->lpage,
- sgl->lpage_size)) {
- dev_err(&pci_dev->dev, "[%s] err: copying lpage!\n",
- __func__);
- rc = -EFAULT;
+ if (sgl->write) {
+ offset = sgl->user_size - sgl->lpage_size;
+ res = copy_to_user(sgl->user_addr + offset, sgl->lpage,
+ sgl->lpage_size);
+ if (res) {
+ dev_err(&pci_dev->dev,
+ "[%s] err: copying lpage! (res=%lu)\n",
+ __func__, res);
+ rc = -EFAULT;
+ }
}
__genwqe_free_consistent(cd, PAGE_SIZE, sgl->lpage,
sgl->lpage_dma_addr);
@@ -599,14 +610,14 @@ int genwqe_user_vmap(struct genwqe_dev *cd, struct dma_mapping *m, void *uaddr,
/* pin user pages in memory */
rc = get_user_pages_fast(data & PAGE_MASK, /* page aligned addr */
m->nr_pages,
- 1, /* write by caller */
+ m->write, /* readable/writable */
m->page_list); /* ptrs to pages */
if (rc < 0)
goto fail_get_user_pages;
/* assumption: get_user_pages can be killed by signals. */
if (rc < m->nr_pages) {
- free_user_pages(m->page_list, rc, 0);
+ free_user_pages(m->page_list, rc, m->write);
rc = -EFAULT;
goto fail_get_user_pages;
}
@@ -618,7 +629,7 @@ int genwqe_user_vmap(struct genwqe_dev *cd, struct dma_mapping *m, void *uaddr,
return 0;
fail_free_user_pages:
- free_user_pages(m->page_list, m->nr_pages, 0);
+ free_user_pages(m->page_list, m->nr_pages, m->write);
fail_get_user_pages:
kfree(m->page_list);
@@ -651,7 +662,7 @@ int genwqe_user_vunmap(struct genwqe_dev *cd, struct dma_mapping *m,
genwqe_unmap_pages(cd, m->dma_list, m->nr_pages);
if (m->page_list) {
- free_user_pages(m->page_list, m->nr_pages, 1);
+ free_user_pages(m->page_list, m->nr_pages, m->write);
kfree(m->page_list);
m->page_list = NULL;
diff --git a/drivers/misc/lkdtm_core.c b/drivers/misc/lkdtm_core.c
index ed7f0c61c59a..ba92291508dc 100644
--- a/drivers/misc/lkdtm_core.c
+++ b/drivers/misc/lkdtm_core.c
@@ -122,7 +122,7 @@ struct crashtype {
}
/* Define the possible types of crashes that can be triggered. */
-struct crashtype crashtypes[] = {
+static const struct crashtype crashtypes[] = {
CRASHTYPE(PANIC),
CRASHTYPE(BUG),
CRASHTYPE(WARNING),
@@ -188,8 +188,8 @@ struct crashtype crashtypes[] = {
/* Global kprobe entry and crashtype. */
static struct kprobe *lkdtm_kprobe;
-struct crashpoint *lkdtm_crashpoint;
-struct crashtype *lkdtm_crashtype;
+static struct crashpoint *lkdtm_crashpoint;
+static const struct crashtype *lkdtm_crashtype;
/* Module parameters */
static int recur_count = -1;
@@ -212,7 +212,7 @@ MODULE_PARM_DESC(cpoint_count, " Crash Point Count, number of times the "\
/* Return the crashtype number or NULL if the name is invalid */
-static struct crashtype *find_crashtype(const char *name)
+static const struct crashtype *find_crashtype(const char *name)
{
int i;
@@ -228,7 +228,7 @@ static struct crashtype *find_crashtype(const char *name)
* This is forced noinline just so it distinctly shows up in the stackdump
* which makes validation of expected lkdtm crashes easier.
*/
-static noinline void lkdtm_do_action(struct crashtype *crashtype)
+static noinline void lkdtm_do_action(const struct crashtype *crashtype)
{
if (WARN_ON(!crashtype || !crashtype->func))
return;
@@ -236,7 +236,7 @@ static noinline void lkdtm_do_action(struct crashtype *crashtype)
}
static int lkdtm_register_cpoint(struct crashpoint *crashpoint,
- struct crashtype *crashtype)
+ const struct crashtype *crashtype)
{
int ret;
@@ -300,7 +300,7 @@ static ssize_t lkdtm_debugfs_entry(struct file *f,
size_t count, loff_t *off)
{
struct crashpoint *crashpoint = file_inode(f)->i_private;
- struct crashtype *crashtype = NULL;
+ const struct crashtype *crashtype = NULL;
char *buf;
int err;
@@ -368,7 +368,7 @@ static int lkdtm_debugfs_open(struct inode *inode, struct file *file)
static ssize_t direct_entry(struct file *f, const char __user *user_buf,
size_t count, loff_t *off)
{
- struct crashtype *crashtype;
+ const struct crashtype *crashtype;
char *buf;
if (count >= PAGE_SIZE)
@@ -404,7 +404,7 @@ static struct dentry *lkdtm_debugfs_root;
static int __init lkdtm_module_init(void)
{
struct crashpoint *crashpoint = NULL;
- struct crashtype *crashtype = NULL;
+ const struct crashtype *crashtype = NULL;
int ret = -EINVAL;
int i;
diff --git a/drivers/misc/mei/mei-trace.c b/drivers/misc/mei/mei-trace.c
index e19e6acb191b..374edde72a14 100644
--- a/drivers/misc/mei/mei-trace.c
+++ b/drivers/misc/mei/mei-trace.c
@@ -23,5 +23,4 @@
EXPORT_TRACEPOINT_SYMBOL(mei_reg_read);
EXPORT_TRACEPOINT_SYMBOL(mei_reg_write);
EXPORT_TRACEPOINT_SYMBOL(mei_pci_cfg_read);
-EXPORT_TRACEPOINT_SYMBOL(mei_pci_cfg_write);
#endif /* __CHECKER__ */
diff --git a/drivers/misc/mei/mei-trace.h b/drivers/misc/mei/mei-trace.h
index 7d2d5d4a1624..b52e9b97a7c0 100644
--- a/drivers/misc/mei/mei-trace.h
+++ b/drivers/misc/mei/mei-trace.h
@@ -83,25 +83,6 @@ TRACE_EVENT(mei_pci_cfg_read,
__get_str(dev), __entry->reg, __entry->offs, __entry->val)
);
-TRACE_EVENT(mei_pci_cfg_write,
- TP_PROTO(const struct device *dev, const char *reg, u32 offs, u32 val),
- TP_ARGS(dev, reg, offs, val),
- TP_STRUCT__entry(
- __string(dev, dev_name(dev))
- __field(const char *, reg)
- __field(u32, offs)
- __field(u32, val)
- ),
- TP_fast_assign(
- __assign_str(dev, dev_name(dev))
- __entry->reg = reg;
- __entry->offs = offs;
- __entry->val = val;
- ),
- TP_printk("[%s] pci cfg write %s[%#x] = %#x",
- __get_str(dev), __entry->reg, __entry->offs, __entry->val)
-);
-
#endif /* _MEI_TRACE_H_ */
/* This part must be outside protection */
diff --git a/drivers/misc/mic/Kconfig b/drivers/misc/mic/Kconfig
index 6fd9d367dea7..227cc7443671 100644
--- a/drivers/misc/mic/Kconfig
+++ b/drivers/misc/mic/Kconfig
@@ -1,3 +1,5 @@
+menu "Intel MIC & related support"
+
comment "Intel MIC Bus Driver"
config INTEL_MIC_BUS
@@ -150,3 +152,5 @@ config VOP
if VOP
source "drivers/vhost/Kconfig.vringh"
endif
+
+endmenu