1 files changed, 20 insertions, 37 deletions

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index bb0635bd74f2..c099b082cd02 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -32,7 +32,6 @@
 #include <linux/security.h>
 #include <linux/bootmem.h>
 #include <linux/memblock.h>
-#include <linux/aio.h>
 #include <linux/syscalls.h>
 #include <linux/kexec.h>
 #include <linux/kdb.h>
@@ -46,6 +45,7 @@
 #include <linux/irq_work.h>
 #include <linux/utsname.h>
 #include <linux/ctype.h>
+#include <linux/uio.h>
 
 #include <asm/uaccess.h>
 
@@ -521,7 +521,7 @@ static ssize_t devkmsg_write(struct kiocb *iocb, struct iov_iter *from)
         int i;
         int level = default_message_loglevel;
         int facility = 1;       /* LOG_USER */
-        size_t len = iocb->ki_nbytes;
+        size_t len = iov_iter_count(from);
         ssize_t ret = len;
 
         if (len > LOG_LINE_MAX)
@@ -2017,24 +2017,6 @@ int add_preferred_console(char *name, int idx, char *options)
         return __add_preferred_console(name, idx, options, NULL);
 }
 
-int update_console_cmdline(char *name, int idx, char *name_new, int idx_new, char *options)
-{
-        struct console_cmdline *c;
-        int i;
-
-        for (i = 0, c = console_cmdline;
-             i < MAX_CMDLINECONSOLES && c->name[0];
-             i++, c++)
-                if (strcmp(c->name, name) == 0 && c->index == idx) {
-                        strlcpy(c->name, name_new, sizeof(c->name));
-                        c->options = options;
-                        c->index = idx_new;
-                        return i;
-                }
-        /* not found */
-        return -1;
-}
-
 bool console_suspend_enabled = true;
 EXPORT_SYMBOL(console_suspend_enabled);
 
@@ -2436,9 +2418,6 @@ void register_console(struct console *newcon)
         if (preferred_console < 0 || bcon || !console_drivers)
                 preferred_console = selected_console;
 
-        if (newcon->early_setup)
-                newcon->early_setup();
-
         /*
          *      See if we want to use this console driver. If we
          *      didn't select a console we take the first one
@@ -2464,23 +2443,27 @@ void register_console(struct console *newcon)
         for (i = 0, c = console_cmdline;
              i < MAX_CMDLINECONSOLES && c->name[0];
              i++, c++) {
-                BUILD_BUG_ON(sizeof(c->name) != sizeof(newcon->name));
-                if (strcmp(c->name, newcon->name) != 0)
-                        continue;
-                if (newcon->index >= 0 &&
-                    newcon->index != c->index)
-                        continue;
-                if (newcon->index < 0)
-                        newcon->index = c->index;
+                if (!newcon->match ||
+                    newcon->match(newcon, c->name, c->index, c->options) != 0) {
+                        /* default matching */
+                        BUILD_BUG_ON(sizeof(c->name) != sizeof(newcon->name));
+                        if (strcmp(c->name, newcon->name) != 0)
+                                continue;
+                        if (newcon->index >= 0 &&
+                            newcon->index != c->index)
+                                continue;
+                        if (newcon->index < 0)
+                                newcon->index = c->index;
 
-                if (_braille_register_console(newcon, c))
-                        return;
+                        if (_braille_register_console(newcon, c))
+                                return;
+
+                        if (newcon->setup &&
+                            newcon->setup(newcon, c->options) != 0)
+                                break;
+                }
 
-                if (newcon->setup &&
-                    newcon->setup(newcon, console_cmdline[i].options) != 0)
-                        break;
                 newcon->flags |= CON_ENABLED;
-                newcon->index = c->index;
                 if (i == selected_console) {
                         newcon->flags |= CON_CONSDEV;
                         preferred_console = selected_console;