kernel/linux.git/arch/cris/include/arch-v32, branch linux-4.7.y

ipv4: Update parameters for csum_tcpudp_magic to their original types

2016-03-14T03:55:13+00:00

This patch updates all instances of csum_tcpudp_magic and csum_tcpudp_nofold to reflect the types that are usually used as the source inputs. For example the protocol field is populated based on nexthdr which is actually an unsigned 8 bit value. The length is usually populated based on skb->len which is an unsigned integer. This addresses an issue in which the IPv6 function csum_ipv6_magic was generating a checksum using the full 32b of skb->len while csum_tcpudp_magic was only using the lower 16 bits. As a result we could run into issues when attempting to adjust the checksum as there was no protocol agnostic way to update it. With this change the value is still truncated as many architectures use "(len + proto) << 8", however this truncation only occurs for values greater than 16776960 in length and as such is unlikely to occur as we stop the inner headers at ~64K in size. I did have to make a few minor changes in the arm, mn10300, nios2, and score versions of the function in order to support these changes as they were either using things such as an OR to combine the protocol and length, or were using ntohs to convert the length which would have truncated the value. I also updated a few spots in terms of whitespace and type differences for the addresses. Most of this was just to make sure all of the definitions were in sync going forward. Signed-off-by: Alexander Duyck Signed-off-by: David S. Miller

CRIS v32: remove old GPIO and LEDs code

2015-11-02T19:03:05+00:00

Since we now have a gpiolib driver, remove this code: The gpio-etraxfs driver (along with things like gpio-keys-polled for polling support) replaces the GIO driver implementations in mach-a3 and mach-fs. The various generic external chip drivers replace the "virtual gpio" parts. The generic gpio-leds driver replaces the LED handling. Signed-off-by: Rabin Vincent Signed-off-by: Jesper Nilsson

CRIS v32: increase NR_IRQS

2015-11-02T19:03:04+00:00

Increase NR_IQRS so we can fit in GPIO interrupts. Signed-off-by: Rabin Vincent Signed-off-by: Jesper Nilsson

CRIS: UAPI: fix elf.h export

2015-09-04T22:33:25+00:00

CRIS userspace (uClibc for one) expects asm/elf.h to be exported but this header appears to have gone missing at some point. Move it to uapi/ and export it. Signed-off-by: Rabin Vincent Signed-off-by: Jesper Nilsson

CRIS: don't make asm/elf.h depend on asm/user.h

2015-09-04T22:33:25+00:00

We're going to export asm/elf.h; remove its dependencies on the non-exported asm/user.h and the unused asm/system.h include. Signed-off-by: Rabin Vincent Signed-off-by: Jesper Nilsson

CRIS: UAPI: fix ptrace.h

2015-09-04T22:33:25+00:00

The exported ptrace.h header on CRIS references an "arch" directory which does not exist. Fix this by having the variants in the same directory and including them conditionally, similar to other architectures. Signed-off-by: Rabin Vincent Signed-off-by: Jesper Nilsson

CRISv32: add unreachable() to BUG()

2015-09-04T22:33:24+00:00

Add an unreachable() in the BUG() implementations, to get rid of several warnings similar to the one below: kernel/sched/core.c: In function 'pick_next_task': kernel/sched/core.c:2690:1: warning: control reaches end of non-void function [-Wreturn-type] Signed-off-by: Rabin Vincent Signed-off-by: Jesper Nilsson

CRIS: use generic atomic.h

2015-03-25T09:57:03+00:00

CRIS can use asm-generic's atomic.h. Signed-off-by: Rabin Vincent Signed-off-by: Jesper Nilsson

CRIS: remove SMP code

2015-03-25T09:55:10+00:00

The CRIS SMP code cannot be built since there is no (and appears to never have been) a CONFIG_SMP Kconfig option in arch/cris/. Remove it. Signed-off-by: Rabin Vincent Signed-off-by: Jesper Nilsson

CRISv32: don't enable irqs in INIT_THREAD

2015-03-25T09:54:06+00:00

INIT_THREAD enables interrupts in the thread_struct's saved flags. This means that interrupts get enabled in the middle of context_switch() while switching to new tasks that get forked off the init task during boot. Don't do this. Fixes the following splat on boot with spinlock debugging on: BUG: spinlock cpu recursion on CPU#0, swapper/2 lock: runqueues+0x0/0x47c, .magic: dead4ead, .owner: swapper/0, .owner_cpu: 0 CPU: 0 PID: 2 Comm: swapper Not tainted 3.19.0-08796-ga747b55 #285 Call Trace: [] spin_bug+0x2a/0x36 [] do_raw_spin_lock+0xa2/0x126 [] _raw_spin_lock+0x20/0x2a [] scheduler_tick+0x22/0x76 [] update_process_times+0x5e/0x72 [] timer_interrupt+0x4e/0x6a [] handle_irq_event_percpu+0x54/0xf2 [] handle_irq_event+0x50/0x74 [] handle_simple_irq+0x6c/0xbe [] generic_handle_irq+0x2a/0x36 [] do_IRQ+0x38/0x84 [] crisv32_do_IRQ+0x54/0x60 [] IRQ0x4b_interrupt+0x34/0x3c [] __schedule+0x24a/0x532 [] ret_from_kernel_thread+0x0/0x14 Signed-off-by: Rabin Vincent Signed-off-by: Jesper Nilsson