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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-27 09:33:21 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-27 09:33:21 +0200 |
| commit | e947861d0ccbc765af4512a395251e6af6857600 (patch) | |
| tree | e2b8d646f40016e887162bcaf53859edaae15bc9 /drivers/tty/hvc | |
| parent | 6f1c0268a4871a80c0ec78142eeb1fe0556e898a (diff) | |
| parent | 6a8b55ed4056ea5559ebe4f6a4b247f627870d4c (diff) | |
Merge 5.7-rc3 into tty-next
We need the tty/serial fixes in here too.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/hvc')
| -rw-r--r-- | drivers/tty/hvc/hvc_console.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c index 27284a2dcd2b..436cc51c92c3 100644 --- a/drivers/tty/hvc/hvc_console.c +++ b/drivers/tty/hvc/hvc_console.c @@ -302,10 +302,6 @@ int hvc_instantiate(uint32_t vtermno, int index, const struct hv_ops *ops) vtermnos[index] = vtermno; cons_ops[index] = ops; - /* reserve all indices up to and including this index */ - if (last_hvc < index) - last_hvc = index; - /* check if we need to re-register the kernel console */ hvc_check_console(index); @@ -960,13 +956,22 @@ struct hvc_struct *hvc_alloc(uint32_t vtermno, int data, cons_ops[i] == hp->ops) break; - /* no matching slot, just use a counter */ - if (i >= MAX_NR_HVC_CONSOLES) - i = ++last_hvc; + if (i >= MAX_NR_HVC_CONSOLES) { + + /* find 'empty' slot for console */ + for (i = 0; i < MAX_NR_HVC_CONSOLES && vtermnos[i] != -1; i++) { + } + + /* no matching slot, just use a counter */ + if (i == MAX_NR_HVC_CONSOLES) + i = ++last_hvc + MAX_NR_HVC_CONSOLES; + } hp->index = i; - cons_ops[i] = ops; - vtermnos[i] = vtermno; + if (i < MAX_NR_HVC_CONSOLES) { + cons_ops[i] = ops; + vtermnos[i] = vtermno; + } list_add_tail(&(hp->next), &hvc_structs); mutex_unlock(&hvc_structs_mutex); |