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Message-ID: <470A05DF.5080405@gmail.com> Date: Mon, 08 Oct 2007 12:26:39 +0200 From: Jiri Slaby <jirislaby@...il.com> To: Paul Hardwick <p.hardwick@...ion.com> CC: Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: nozomi: ERESTARTSYS to userspace? Hi, static int ntty_write(struct tty_struct *tty, const unsigned char *buffer, int count) { int rval = -EINVAL; struct nozomi *dc = get_dc_by_tty(tty); struct port *port = (struct port *)tty->driver_data; unsigned long flags; /* DBG1( "WRITEx: %d, index = %d", count, index); */ if (!dc || !port) return -ENODEV; if (unlikely(down_trylock(&port->tty_sem))) { /* * must test lock as tty layer wraps calls * to this function with BKL */ dev_err(&dc->pdev->dev, "Would have deadlocked - " "return ERESTARTSYS\n"); return -ERESTARTSYS; } The use of ERESTARTSYS seems bogus to me, no signal is pending and this flag would reach userspace (that is not permitted), am I right? --js - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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