Commit ddaebcab authored by Mike Frysinger's avatar Mike Frysinger
Browse files

Blackfin: add support for restart_syscall() 



Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
parent 9e228ee9

arch/blackfin/kernel/signal.c

+9 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <asm/cacheflush.h>

#include <asm/ucontext.h>

#include <asm/fixed_code.h>

#include <asm/syscall.h>



#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
@@ -50,6 +51,9 @@ rt_restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *p 
	unsigned long usp = 0;

	int err = 0;



	/* Always make any pending restarted system calls return -EINTR */

	current_thread_info()->restart_block.fn = do_no_restart_syscall;



#define RESTORE(x) err |= __get_user(regs->x, &sc->sc_##x)



	/* restore passed registers */
@@ -237,6 +241,11 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler) 
		regs->r0 = regs->orig_r0;

		regs->pc -= 2;

		break;



	case -ERESTART_RESTARTBLOCK:

		regs->p0 = __NR_restart_syscall;

		regs->pc -= 2;

		break;

	}

}