- 09 Apr, 2012 35 commits
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Jiri Slaby authored
The driver already used refcounting. So we just switch it to tty_port helpers. And switch to tty_port->lock for tty. Signed-off-by:
Jiri Slaby <jslaby@suse.cz> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Jiri Slaby authored
And use kref from that. This means we need tty_port->ops->destruct to properly free the structure. This is what destroy_hvc_struct used to do so we leverage that. Signed-off-by:
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Jiri Slaby authored
Switch from mutex to tty_port->lock and to tty refcounting. This needs a 'continue' to be added to re-grab a tty after schedule returns. And since tty is not protected by bfin_jc_tty_mutex remove it as well. But this needs tty_port->count to be protected by tty_port->lock now. Signed-off-by:
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Jiri Slaby authored
And use open count from there. Switch to tty from there will follow. Signed-off-by:
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Jiri Slaby authored
And use tty from that. This means, we convert most of the users to accept tty_port instead. This is not racy and ensures the tty to be properly refcounted. Signed-off-by:
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Jiri Slaby authored
So that we do not need to access tp->tty there. It is going away. Signed-off-by:
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Jiri Slaby authored
Blah, do not assume that raw3270_view is at the beginning of tty3270. Use proper types and container_of wherever needed. Signed-off-by:
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Jiri Slaby authored
Let us initialize all the tty3270's members at the place where the structure is allocated. It cleans up tty->ops->open a bit. Signed-off-by:
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Jiri Slaby authored
80 bytes which are allocated in tty->ops->open and assigned to tty->driver_data are never used. Remove that. Signed-off-by:
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Jiri Slaby authored
tty_port will hold tty buffers in the future. So we need to have it even here. The only needed member here is tty, so let us store it in the structure now. Signed-off-by:
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Jiri Slaby authored
tty_port will hold tty buffers in the future. So we need to have it even here. The only needed member here is tty, so let us store it in the structure now. Signed-off-by:
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Jiri Slaby authored
There are two copies of allocations of device information. One of them is totally broken. See: raw->cdev = cdev; raw->inbuf = (char *) raw + sizeof(struct raw3215_info); memset(raw, 0, sizeof(struct raw3215_info)); It suggests that this path was never executed. The code uses both raw->cdev and raw->inbuf all over. And it is NULL due to the memset here, so it would panic immediately. I believe nobody used that driver without being a system console. Either way, let us fix it by moving the allocations (and initializations) to a single place. This will save us some double initializations later too. And while at it, initialize the timer properly -- once, at the allocation. Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Cc: linux390@de.ibm.com Cc: linux-s390@vger.kernel.org Signed-off-by:
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Jiri Slaby authored
We switched tty refcounting there to the one provided by tty_port helpers. So tty_port->tty is now protected by tty_port->lock, not by hso_serial->serial_lock. Side note: tty->driver_data does not need the lock, so it is needed neither in open, nor in close paths. Signed-off-by:
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Jiri Slaby authored
tty is never NULL in tty->ops->* while the device is open. (And they are not called otherwise.) So remove pointless checks and use tty->driver_data directly. Signed-off-by:
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Jiri Slaby authored
And use open count from there. Other members will follow. Remark: port.count is (and never was) properly protected. Only a mutex is held, so ISR and all the functions it calls may see an invalid state. Signed-off-by:
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Jiri Slaby authored
Do not leak tty_driver structure on each module removal. Also do proper frees in fail paths of module_init. Signed-off-by:
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Jiri Slaby authored
It is set in alloc_tty_driver already. No need to re-set. Signed-off-by:
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Jiri Slaby authored
This removes a bunch of duplicated code which does the same as tty_port_block_til_ready does. Signed-off-by:
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Jiri Slaby authored
Add there .carrier_raised. It is taken from current block_til_ready. We will need tty_port->ops->carrier_raised for tty_port_block_til_ready helper. Signed-off-by:
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Jiri Slaby authored
The code does almost the same, so there we can leverage the helper's code. The only difference is locking. The helper protects counts by a spinlock. This never hurts and should be added to other code parts too. Signed-off-by:
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Jiri Slaby authored
In some functions we use tty_port much. So let us have a local pointer to that variable instead of having info->port all over the code. Signed-off-by:
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Jiri Slaby authored
Signed-off-by:
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Jiri Slaby authored
No recounting this time, just a plain switch. Signed-off-by:
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Jiri Slaby authored
blocked_open and count this time. Signed-off-by:
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Jiri Slaby authored
Hmm, the isdn ones were initialized twice. Signed-off-by:
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Jiri Slaby authored
And use tty_port->flags now. Other members will follow. Signed-off-by:
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Jiri Slaby authored
session and pgrp are unused. Prune them. Signed-off-by:
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Jiri Slaby authored
Huh, this was a mess. * Remove the 5 indent levels by just returning from isdn_tty_try_read when the conditions there are not satisfied. * Use 'continue' in loop in isdn_tty_readmodem to save 2 levels. * Chain 'if's in isdn_tty_modem_escape. * Use 'continue' in loop in isdn_tty_carrier_timeout to save 1 level. Better to look at this patch with -w -b. Signed-off-by:
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Jiri Slaby authored
The module which called allocate_tty_driver is already refcounted by the TTY layer automatically. And since THIS_MODULE is isdn_tty and it allocated the tty_driver, there is no need to do the counts in isdn's tty->ops->open/close. Signed-off-by:
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Jiri Slaby authored
They are the same as TTY ones. So there is no need to redefine them. Remove ISDN_ASYNC_* and use only ASYNC_*. Except the MAGIC number, of course. While we are there, remove also the SERIAL_TYPE flags which are unused. Perhaps we should move the ASYNC flags from serial.h to tty.h given they are used by the tty layer and tty drivers, not only serial? Signed-off-by:
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Jiri Slaby authored
I wonder how this survived there during the whole 2.6 series until now :D. Callouts are not used for a decade, so let us remove it also from isdn. This means removal of ISDN_ASYNC_CALLOUT_ACTIVE which is never raised in info->flags and callout_termios which are never used. This will help us to get rid of ISDN_ASYNC_* flags and use ASYNC ones from serial.h. And then we will switch to tty_port. Signed-off-by:
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Jiri Slaby authored
CVS $Id$ is unused and makes no sense in our tree. Get rid of that. Signed-off-by:
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Jiri Slaby authored
Since nobody in the kernel includes that file, let us remove the structs visible to the kernel. However since the userspace sees the file, it still may include that. hence deprecate the use of the header by an added cpp #warning. We should remove the file completely after a couple of years. Signed-off-by:
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Jiri Slaby authored
The tty_port used in the driver is left uninitialized. Add the initialization there. Signed-off-by:
Jesper Nilsson <jesper.nilsson@axis.com> Cc: linux-cris-kernel@axis.com Signed-off-by:
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Jiri Slaby authored
This used to be a helper buffer for generic_serial. generic_serial is gone, tmp_buf shall be removed. Signed-off-by:
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- 08 Apr, 2012 1 commit
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Linus Torvalds authored
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- 07 Apr, 2012 4 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmapLinus Torvalds authored
Pull two more small regmap fixes from Mark Brown: - Now we have users for it that aren't running Android it turns out that regcache_sync_region() is much more useful to drivers if it's exported for use by modules. Who knew? - Make sure we don't divide by zero when doing debugfs dumps of rbtrees, not visible up until now because everything was providing at least some cache on startup. * tag 'regmap-3.4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: prevent division by zero in rbtree_show regmap: Export regcache_sync_region()
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull a few KVM fixes from Avi Kivity: "A bunch of powerpc KVM fixes, a guest and a host RCU fix (unrelated), and a small build fix." * 'kvm-updates/3.4' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: Resolve RCU vs. async page fault problem KVM: VMX: vmx_set_cr0 expects kvm->srcu locked KVM: PMU: Fix integer constant is too large warning in kvm_pmu_set_msr() KVM: PPC: Book3S: PR: Fix preemption KVM: PPC: Save/Restore CR over vcpu_run KVM: PPC: Book3S HV: Save and restore CR in __kvmppc_vcore_entry KVM: PPC: Book3S HV: Fix kvm_alloc_linear in case where no linears exist KVM: PPC: Book3S: Compile fix for ppc32 in HIOR access code
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git://github.com/pmundt/linux-shLinus Torvalds authored
Pull SuperH fixes from Paul Mundt. * tag 'sh-for-linus' of git://github.com/pmundt/linux-sh: sh: fix clock-sh7757 for the latest sh_mobile_sdhi driver serial: sh-sci: use serial_port_in/out vs sci_in/out. sh: vsyscall: Fix up .eh_frame generation. sh: dma: Fix up device attribute mismatch from sysdev fallout. sh: dwarf unwinder depends on SHcompact. sh: fix up fallout from system.h disintegration.
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-securityLinus Torvalds authored
Pull security layer fixlet from James Morris. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: sysctl: fix write access to dmesg_restrict/kptr_restrict
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