releases/4.19.31/irqchip-gic-v3-its-avoid-parsing-_indirect_-twice-for-device-table.patch

   1 From 8d565748b6035eeda18895c213396a4c9fac6a4c Mon Sep 17 00:00:00 2001
   2 From: Zenghui Yu <yuzenghui@huawei.com>
   3 Date: Sun, 10 Feb 2019 05:24:10 +0000
   4 Subject: irqchip/gic-v3-its: Avoid parsing _indirect_ twice for Device table
   5
   6 From: Zenghui Yu <yuzenghui@huawei.com>
   7
   8 commit 8d565748b6035eeda18895c213396a4c9fac6a4c upstream.
   9
  10 In current logic, its_parse_indirect_baser() will be invoked twice
  11 when allocating Device tables. Add a *break* to omit the unnecessary
  12 and annoying (might be ...) invoking.
  13
  14 Fixes: 32bd44dc19de ("irqchip/gic-v3-its: Fix the incorrect parsing of VCPU table size")
  15 Cc: stable@vger.kernel.org
  16 Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
  17 Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
  18 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  19
  20 ---
  21  drivers/irqchip/irq-gic-v3-its.c |    2 ++
  22  1 file changed, 2 insertions(+)
  23
  24 --- a/drivers/irqchip/irq-gic-v3-its.c
  25 +++ b/drivers/irqchip/irq-gic-v3-its.c
  26 @@ -1893,6 +1893,8 @@ static int its_alloc_tables(struct its_n
  27                         indirect = its_parse_indirect_baser(its, baser,
  28                                                             psz, &order,
  29                                                             its->device_ids);
  30 +                       break;
  31 +
  32                 case GITS_BASER_TYPE_VCPU:
  33                         indirect = its_parse_indirect_baser(its, baser,
  34                                                             psz, &order,