[PATCH net-next v2 1/4] net: marvell: prestera: do not fail if FW reply is bigger
From: Vadym Kochan <hidden>
Date: 2021-08-02 14:16:13
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Subsystem:
marvell prestera ethernet switch driver, networking drivers, the rest · Maintainers:
Elad Nachman, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Vadym Kochan <redacted> There might be a case when driver talks to the newer FW version which has extended message packets with extra fields, in that case lets just copy minimum what we need/can. Signed-off-by: Vadym Kochan <redacted> --- drivers/net/ethernet/marvell/prestera/prestera_pci.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_pci.c b/drivers/net/ethernet/marvell/prestera/prestera_pci.c
index a250d394da38..58642b540322 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_pci.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_pci.c@@ -359,12 +359,7 @@ static int prestera_fw_cmd_send(struct prestera_fw *fw, } ret_size = prestera_fw_read(fw, PRESTERA_CMD_RCV_LEN_REG); - if (ret_size > out_size) { - dev_err(fw->dev.dev, "ret_size (%u) > out_len(%zu)\n", - ret_size, out_size); - err = -EMSGSIZE; - goto cmd_exit; - } + ret_size = min_t(u32, ret_size, out_size); memcpy_fromio(out_msg, fw->cmd_mbox + in_size, ret_size);
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2.17.1