Patch "ttyFDC: Fix build problems due to use of module_{init,exit}" has been added to the 4.2-stable tree

Patch "ttyFDC: Fix build problems due to use of module_{init,exit}" has been added to the 4.2-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    ttyFDC: Fix build problems due to use of module_{init,exit}

to the 4.2-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ttyfdc-fix-build-problems-due-to-use-of-module_-init-exit.patch
and it can be found in the queue-4.2 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 3e8137a185240fa6da0ff91cd9c604716371903b Mon Sep 17 00:00:00 2001
From: James Hogan <james.hogan@imgtec.com>
Date: Tue, 6 Oct 2015 15:12:06 +0100
Subject: ttyFDC: Fix build problems due to use of module_{init,exit}
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: James Hogan <james.hogan@imgtec.com>

commit 3e8137a185240fa6da0ff91cd9c604716371903b upstream.

Commit 0fd972a7d91d (module: relocate module_init from init.h to
module.h) broke the build of ttyFDC driver due to that driver's (mis)use
of module_mips_cdmm_driver() without first including module.h, for
example:

In file included from ./arch/mips/include/asm/cdmm.h +11 :0,
                 from drivers/tty/mips_ejtag_fdc.c +34 :
include/linux/device.h +1295 :1: warning: data definition has no type or storage class
./arch/mips/include/asm/cdmm.h +84 :2: note: in expansion of macro ‘module_driver’
drivers/tty/mips_ejtag_fdc.c +1157 :1: note: in expansion of macro ‘module_mips_cdmm_driver’
include/linux/device.h +1295 :1: error: type defaults to ‘int’ in declaration of ‘module_init’ [-Werror=implicit-int]
./arch/mips/include/asm/cdmm.h +84 :2: note: in expansion of macro ‘module_driver’
drivers/tty/mips_ejtag_fdc.c +1157 :1: note: in expansion of macro ‘module_mips_cdmm_driver’
drivers/tty/mips_ejtag_fdc.c +1157 :1: warning: parameter names (without types) in function declaration

Instead of just adding the module.h include, switch to using the new
builtin_mips_cdmm_driver() helper macro and drop the remove callback,
since it isn't needed. If module support is added later, the code can
always be resurrected.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: linux-mips@linux-mips.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/tty/mips_ejtag_fdc.c |   35 +----------------------------------
 1 file changed, 1 insertion(+), 34 deletions(-)

--- a/drivers/tty/mips_ejtag_fdc.c
+++ b/drivers/tty/mips_ejtag_fdc.c
@@ -1045,38 +1045,6 @@ err_destroy_ports:
 	return ret;
 }
 
-static int mips_ejtag_fdc_tty_remove(struct mips_cdmm_device *dev)
-{
-	struct mips_ejtag_fdc_tty *priv = mips_cdmm_get_drvdata(dev);
-	struct mips_ejtag_fdc_tty_port *dport;
-	int nport;
-	unsigned int cfg;
-
-	if (priv->irq >= 0) {
-		raw_spin_lock_irq(&priv->lock);
-		cfg = mips_ejtag_fdc_read(priv, REG_FDCFG);
-		/* Disable interrupts */
-		cfg &= ~(REG_FDCFG_TXINTTHRES | REG_FDCFG_RXINTTHRES);
-		cfg |= REG_FDCFG_TXINTTHRES_DISABLED;
-		cfg |= REG_FDCFG_RXINTTHRES_DISABLED;
-		mips_ejtag_fdc_write(priv, REG_FDCFG, cfg);
-		raw_spin_unlock_irq(&priv->lock);
-	} else {
-		priv->removing = true;
-		del_timer_sync(&priv->poll_timer);
-	}
-	kthread_stop(priv->thread);
-	if (dev->cpu == 0)
-		mips_ejtag_fdc_con.tty_drv = NULL;
-	tty_unregister_driver(priv->driver);
-	for (nport = 0; nport < NUM_TTY_CHANNELS; nport++) {
-		dport = &priv->ports[nport];
-		tty_port_destroy(&dport->port);
-	}
-	put_tty_driver(priv->driver);
-	return 0;
-}
-
 static int mips_ejtag_fdc_tty_cpu_down(struct mips_cdmm_device *dev)
 {
 	struct mips_ejtag_fdc_tty *priv = mips_cdmm_get_drvdata(dev);
@@ -1149,12 +1117,11 @@ static struct mips_cdmm_driver mips_ejta
 		.name	= "mips_ejtag_fdc",
 	},
 	.probe		= mips_ejtag_fdc_tty_probe,
-	.remove		= mips_ejtag_fdc_tty_remove,
 	.cpu_down	= mips_ejtag_fdc_tty_cpu_down,
 	.cpu_up		= mips_ejtag_fdc_tty_cpu_up,
 	.id_table	= mips_ejtag_fdc_tty_ids,
 };
-module_mips_cdmm_driver(mips_ejtag_fdc_tty_driver);
+builtin_mips_cdmm_driver(mips_ejtag_fdc_tty_driver);
 
 static int __init mips_ejtag_fdc_init_console(void)
 {


Patches currently in stable-queue which might be from james.hogan@imgtec.com are

queue-4.2/mips-kvm-fix-cache-immediate-offset-sign-extension.patch
queue-4.2/mips-kvm-fix-asid-restoration-logic.patch
queue-4.2/mips-cdmm-add-builtin_mips_cdmm_driver-macro.patch
queue-4.2/mips-kvm-uninit-vcpu-in-vcpu_create-error-path.patch
queue-4.2/ttyfdc-fix-build-problems-due-to-use-of-module_-init-exit.patch