iwlwifi: pcie: use seq_file for tx_queue debugfs file

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On newer hardware, the tx_queue debugfs file would need to
allocate 37.5kib data since there are 512 queues, which is
too much. Rather than resorting to kludges like kvmalloc(),
use the seq_file API to print out the data.

While at it, also fix a NULL pointer dereference here, the
txq pointer from trans_pcie->txqs[] may be NULL if that
queue hasn't been allocated.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200417131727.491cf8224c49.I7f154d81e5becef3b5ff22d7c6e36170bde0d7d5@changeid

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Johannes Berg 2020-04-17 13:21:38 +03:00 • committed by Luca Coelho

parent 250380c9b8

commit df67a1bea0

1 changed files with 89 additions and 32 deletions

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drivers/net/wireless/intel/iwlwifi/pcie/trans.c

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