[PATCH] ahci: zero-initialize port struct

[Gerd Hoffmann]

Specifically port->driver.lchs needs clearing, otherwise seabios will
try interpret whatever random crap happens to be there as disk geometry,
which may or may not break boot depending on how lucky you are.

Signed-off-by: Gerd Hoffmann <address@hidden>
---
 src/hw/ahci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/hw/ahci.c b/src/hw/ahci.c
index 97a072a1ca81..d45b4307ec68 100644
--- a/src/hw/ahci.c
+++ b/src/hw/ahci.c
@@ -345,6 +345,7 @@ ahci_port_alloc(struct ahci_ctrl_s *ctrl, u32 pnr)
         warn_noalloc();
         return NULL;
     }
+    memset(port, 0, sizeof(*port));
     port->pnr = pnr;
     port->ctrl = ctrl;
     port->list = memalign_tmp(1024, 1024);
-- 
2.18.1